Welcome to this guide which will help you to get most achievements of the game. Doom and Destiny Adv has an autosave feature which has no manual interception which makes getting the achievements a bit harder than most games. So if you are aiming to get the 100% achievements it's better planning from the head start since getting certain achievements would be more difficult if you reach the max level cap.

I have seen most players getting confused by the "Green" enemies "Red" enemies which requires the player to kill them for getting certain achievements. So first and foremost, the green, red, yellow are not colors of the enemies beautiful bodies. It means the level of enemy difficulty.
There are 4 colors which defines the enemy levels:

* Purple - Very hard enemy
* Red - Difficult enemy
* Yellow - Medium difficult enemy
* Green - Easy enemy
* Grey - Super easy enemy

So the other important question is how we see the enemy level in the game. This on the pc can be done by selecting the enemy in battle using your first attack and pressing the right arrow key twice. You will get this window regarding enemy status:


As you can see in the above image the enemy level is green, thus it's a green enemy in regards to the achievements.

Most importantly please note that the enemy's color level changes in this game when you grow stronger and level up. This is why certain class achievements are easily missable because when you hit the level 149 level cap there are not many enemies which are hard enough for you to defeat

When you slowly level up fighting green enemies let's say as an example, the enemy will eventually turn to grey over time. (So purple would become red and yellow becomes green and so on) So its very important to check the enemy color level often and see if it contributes to the achievement via the "Journal" option from the game.

There are rare instances where newly turned color enemies sometimes counts toward an achievement. For an example for Necromancer's Braaains achievement. It is required to zombify green enemies. When i was doing gem dungeon level 3 of graveyard. Some enemies were green at first when i slowly leveled up they turned grey or lighter grey, and zombifying them still contributed to the achievement. Vice versa, killing purple enemies with negative states contributed to my "Apple a day" acheivement which only involves red enemies. I cannot guarantee this would work for every achievement but it's worth a try. Thus, keep alert when you do these achievements.

Also I read somewhere that opponents in the league battles also counts for color related achievements but I cannot guarantee.

Left for Nerd - Complete Chapter 1
Not Missable



No Nerds No Party - Complete Chapter 2
Not Missable



Return of the Nerd - Complete Chapter 3
Not missable



Nerd to the Bone - Complete Chapter 4
Not Missable



Operation Destiny - Complete Chapter 5
Not Missable



Raiders of the Lost Artifact - Complete Chapter 6
Not Missable



Solomon Steel Inc. - Complete Chapter 7
Not Missable



Blue Screen of Doom - Complete Chapter 8
Not missable



Grand Theft Nerd - Complete Chapter 9
Not missable



Eve of the Noodle - Complete Chapter 10
Not missable



A Trip to Demons Island - Complete Chapter 11
Not missable



Dr. StrangeNerds - Complete Chapter 12
Not missable



Gran Finale - Complete Chapter 13
Not missable

Cosplayer - Buy a costume in Arena Shop
In the arena, you do tournament fights which give you doomstones. On the left upper room in the arena you can buy cosplays using doomstones.



Traveller - Buy 1 Battleback in the Arena Shop
Battlebacks are literally post cards you can buy in the arena shop located in the upper right room. This also requires doomstones.



The New One-Win 1 Online Battle
Online battles are fought in the arena by going to the bald guy near the league boards, and choosing an opponent of your choice.



Pitfighter-Win 20 Online Battles
Choose opponents that are in a lower rank or level than you and win 20 battles.




Heroes vs Rest of the World-Win 1 Online battle as Defender in "Stadium" Battleback
You need to purchase the "Stadium" post card which requires 50 doomstones and employ it in your configuration via the red crystal. You get the achievement when an opponent playing the league attacks you and then they loose the battle. Friendly battles do not count and as they are considered offline battles.



Carnival - Fight 1 Online Battle with all characters in Cosplay
Dress up all your characters in cosplay and win a single battle.



So on and so forth-Fight 1 Online Battle with a total of 12 characters
This can be done by using the perk called "decoy" it would give you 4 dummies to mislead the opponent. Everyone in the arena count so 4x3 = 12 (with the 4 dummies and your team + opponents)


Low Battery -Win an Online Battle without Resource Perks
You can go to the red crystal and choose perks, basically remove each one of them and win a battle



Head Down-Win 6 Online Battle Consecutively
Make sure you are a bit leveled up have some good weapons for this one. You must win 6 league battles without loosing a single one. No breaks in between: win 1 and then choose another battle and win and then so forth.



Sold Out- Reach Full MP with all character in an Online Battle
This could be done using Nigel as Wizard. He has a passive power called "Arcane Focus" which fills the MP bar after a certain amount of time. Basically you have to delay/stall everything until all the MP bars of your team fills up completely. It's easier when the opponent is of low level so their attacks won't hurt you much, basically you can use powerups continuously to gain time.



Last Resort-Win 1 Online Battle with only one character still alive
Make sure the knight class is fully upgraded. Make the Knight's shield go up to level 10 by using the "Iron Shield" 4/5 times. Level 10 shield would take minimum damage for most powerful attacks.



Never say Never-Reach Silver Ladder
Self-explanatory. Keep getting arena points so you come under the first 100 people of the bronze league. Every Saturday the list gets updated and you are either promoted or demoted.



First Class- Reach Gold Ladder
Same as above. Get enough points to be in the first 100 ranked people in the Silver League.




Doom-Store- Spend 50 Doomstones in Arena Shop
Each arena online fight will give you one doomstone per fight when you win. Spend 50 in a shop of your choice. Spending doomstones to change opponents in league does not count.



Destiny-Store-Spend 100 doomstones in Arena Shops
Spend 50 on the Stadium postcard, and spend the rest on good post cards. Choice is up to you.

Class achievements especially involves the level color of the enemies, so they are considered missable by me. Please note again that when you level up the enemy level color would also change. Thus, achievements regarding the enemy level color should be done from the start of the game at least. Please also read important tip above and final notes below as well!

No Man's Land- Sorcerer: Kill 101 enemies with Multiple Attacks
You can use any of the sorcerer's abilities that deals damage to enemies just do it many times.



3 is a Magic Number- Sorcerer: Kill 3 YELLOW enemies with an attack
Make sure there are 3 enemies which has the yellow level, don't let the other party members touch them. Use a single magic attack that affects all enemies. At lvl 130 ish to 140 You need the upgraded void body ring to the max which unlocks the ability called "Self Perfection" use it at least 3 or 4 times on Nigel which would make his attack instantly kill the 3 paladins in the Ultimetal forest.


4 Hit Dice-Wizard: Send to sleep 99 enemies
Use the wizards sleep ability on enemies unlocked at early affinity levels. It can be used on multiple enemies.



Philosopher's Stone- Wizard: Spend 99'999 MP
For this achievement better to max out the Wizard class so the more MP expending abilities are unlocked. Eldiritch Missiles (225 MP) and Meteor Swarm (625 MP) are the best for this.



Braaains- Necromancer: Zombify 666 GREEN enemies
Basically any living beings or some undead beings is vulnerable for Necromancer's "Dead pan" ability. You can also use the passive power called "Mind Swallow" to make zombification more effective.



Beat them all- Defeat 25 Summoners
Unlock the summoner class and defeat those kids with caps. You do not have to find different 25 summoners. Defeat one or few at one location, exit the whole location and re-enter then defeat again. Still counts to the achievement. Please see the final notes for possible location for summoner kids.



Agent with Shield- Knight: Protect a friend 101 times
Use the Knight's "Shield Others" passive ability to auto protect your friends.




Energy Drink-Knight: Absorb 100 HPs from an enemy attack
Easily obtained through Arena fights. The knight's shield should reach the max level physical resistance or magical resistance (level 10) to absorb HP. You can use the "iron shield" ability repeatedly until the shield icon goes to 10 and see if it absorbs HP. Might not work against specific enemy attacks. Any other team abilities that increases the defenses are useful. Any passive HP regeneration ability to the whole party should be off. Read final notes for more tips.


Save Our Souls - Cleric: Heal a total of 9'999 HP
Use cleric's healing abilities, any passive power that increases healing rate is useful.




Skelecorps-Cleric: Kill 333 GREEN Un-Deads
Missable
Undeads are basically skeletons and other other wordly monsters which can be found on graveyards, dungeons etc. Not all monsters in those places are the "undead" especially bats and rats.They need to be green level undeads as well. Cleric's attack which is useful on multiple enemies are good. Make sure he gets to do the last attack which kills them. At lvl 130-140 ish you can try the gem dungeons graveyard level 3 for this achievement. Read final notes for more tips.


The Show Must Go On - Bard: Sing 123 songs
Unlock the Bard class and sing any type of song until you get the achievement.




Ace-Barbarian: Kill 1 YELLOW enemy with a single strike
Make sure barbarian has a good weapon and some strength buffs. Others should not touch the yellow enemy. Use Supreme or Almighty attack depending on enemy level. At lvl 130-140 ish you can use the self perfection from the maxed out void body ring. Use it as much as needed and test your luck on the yellow level enemy.



Bulldozer-Barbarian: Kill 123 GREEN enemies with a base attack
Base attack means no special attacks just use the option 1 from the battle window of the barbarian. Make sure he gives the finishing last blow on the enemy and kills them. Just in case leave the green enemy for the barbarian to fully attack and finish.



Counter-Attack Source-Warrior: Use 101 counter-attacks
Use the warriors passive ability "Avenge the Weak" for this achievement.



Vampirism-Black Guard: Uses 20 time "Macabre Regeneration"
Black Guard has the passive ability "Macabre Regeneration". Employ that and make sure he get critic attacks a lot, i find that would trigger this ability more.



Hell Calling-Black Guard: Inflict more than 666 damage with a single attack
Base attack or any other attack with a good weapon would do for this. Use strength buffs if needed.



Caution on Your Back-Thief: Use 60 Sneak attacks
Use the Thief/Rogue's sneak attack on enemies.




What Yours is Mine-Thief: Steal a total of 1000 Golz and Resources
Use Rogue's passive ability named "Pick Pocket" to steal 1000 golz.





Heavy Cooking-Chef: Inflict 1000 negative states to enemies
My favorite is using the Chef's marination ability which creates negative states.




Traditional Cousine- Chef: Spend 1000 total Food Resources
Use any ability of the chef that uses food. Happy Hour and Marination are some abilities like that. Feast of the gods ability uses 375 food resources per use.




Faithful Friend- Ranger: Kill 99 enemies with a summoned pug in the party
You can use the ability "Summon Grunty" which uses some food. Not sure if the doggo does anything but he doesnt have to fight. Just summon it and you can finish the fight - that is counted to the achievement.

Secret Stumbler- Find 20 Secrets In Game
Not that hard to achieve. Just check every nook and corner.



Secret Hunter-Find 50 Secrets
Medium level Sherlock Holmes skills are needed. Be observant of out of place things, switches and objects.


Secret Master-Find 100 Secrets
Probably will need to use a guide. Make sure to have the red boat which can travel deep waters and the airship for this one. Look out for out of the place single dead trees and very isolated trees. Those usually have something in them. There are 149 game secrets in total just saying.


Bronze Trinkets - Complete 10 Bronze Sidequests
Completing side quests involves fighting particular enemies in particular locations. When you are contributing to a side quest, after a battle you will get an image of 5 badges. They are bronze/orange from the start and will slowly turn into other colors when you keep defeating the same enemies in the location.

Silverware- Complete 10 Silver Sidequests
Basically upgrade the bronze side quests to silver. Rewards are better when completeing these ones.



Golden Boy- Complete 10 Gold Side Quests
Same as above. Upgrade the silver side quests. Rewards are very good compared to other two. Missable quests are: Advanced Cellars and Lizards (in a cave west of Sushi Island, needs airship), Arrrr (in the islands located below summoner swamp, needs red boat or ship) and That's not Italian Food (In sphagetti monster temple (rivertown) underground levels and the Sphagetti monster tower (needs red boat)



Nugget River- Use 200 Nuggets to upgrade classes
Nuggets can be found in chests or can be bought for 5000 golz per 10 nuggets in the Ultimetal Forest Secret Shop. Use them to upgrade classes at the silver crystal.



Cascade of Fragments-Use 100 Fragments to upgrade classes
Also can be found in chests and nuggets can be turned into shards via shops using money.



Gems Tsunami-Use 50 Gems to upgrade classes
Gems are priceless and can be farmed in the 3 gem dungeon levels. The ultimetal forest enemies drops them too sometimes. Can be converted from 20 nuggets to 5 gems in the secret Ultimetal Forest shop for 20000 golz.



Mamma Mia-Collect 1000 Food Resource from Pizzeria
There are 3 pizzerias around the world. The last one is in imperial city which needs a cook book to unlock. This is done by doing the side quest "Monster Chef". Pizzerias require resource boxes to create pizza boxes so you can collect food. Make use of many resource boxes and all pizzerias to get this acheivement.



Critic Right-Kill 255 GREEN enemies with Critic Attack
Can easily be done using when doing the barbarian "Bulldozer" achievement. A good weapon along with a well raised "Critical" attribute in a character will get this achievement. When you are getting a Critical hit the HP reduction number will turn red and a bit big on an enemy. Make sure the enemies are green and it's kill, so it means the last attack of the enemy which kills them should be a critical hit.



Level Capped-Reach Max Level with entire party
Before update the max level was 99, with update it's 149. If you are playing the latest game the max level is 149. It's not hard to reach the max level of entire party in this game, just explore the whole game. Keep in mind that the league battles in arena does not level you up.



Catch me if you can-Escape 10 Battles
Certain items unlock the abilities such as "Retreat" - Smoke Rod and "Fartomancy" - Grandma's Plums which makes you flee the battle. (Other items i am not very sure of)



An apple a day keeps the doctor away-Kill 99 RED enemies with 2 or more negative states
Be observant of red enemies in a location first. They should be killed when they are hit with 2 or more negative states. My favorites for this are: Necromancer's breath of death and Chef's Marination. After that use critical hits or any abilities to kill them. At lvl 149, a pasta monster in the Sphagetti Monster Tower (not temple) helped me get this. Arena opponents also counts or after unlocking the final secret arena those monsters would do too.



Adept of the Reaper- Kill 9999 enemies
Not that hard at lvl 149. Basically use magical attacks such as the Wizards "Ice storm, Meteor swarm" or any magical class/ability that attacks a lot of enemies and kills them in one go or so. Aim for locations where you can fight a lot of enemies per fight. My favorite places are: The crescent island and the rivertown Sphagetti monster temple (underground levels).



All for Charity-Spend 10000 Gold in Battle
Certain abilities can be only done using golz. Use them continuously until you spend 10000. The knight's Holy Avenger ability costs 200 golz. The warrior class is good for this too. Additionally you can use certain item abilities such as the "Health Ankh" which costs money as well.

Reaching level 149 cap is not beneficial for most class acheivements which involves the color of the enemies. However, certain enemies MAY contribute and can be found in locations which may such as:

* Ultimetal Forest enemies
* Sphagetti Monster Tower enemies
* Arena opponents in league related battles (not sure if they contribute but I read somewhere)
* Monster arena battles in the arena unlocked with 4 heartbits (requires 10000 golz)

Heroes vs Rest of the world acheivement can be more easily done when you are at a low level. Players tend to attack you more then. You will need to configure your battleback pretty well so that the attacker will loose.

Skelecops achievement is the most rare in the game global stats, this is because there are less places to find undead enemies. You can double check if the enemy is undead by pressing the right arrow key once in the battle window. If you see an icon where a hand is coming out of the ground (like a zombie icon) that's an undead enemy. Shown below in screenshot btw











When you finish the final fight, you get an opprotunity to stay in the world and are given 4 rings. The rings are pretty useful for class achievements. You need concentration void (not normal void) to upgrade the rings. Void body ring and the red ring are important.

The red ring maxed out is said to aid in the Knight's energy drink achievement, it probably maxes out the defenses. I have not tested this out personally.

The yellow ring maxed out would raise your all stats breaking the level cap for stats. using the ring once would put all stats to level 5, using it again will put all stats to level 10. Using it more would also raise stats but the level is not visible.

Locations of the summoners to my knowledge is as follows:
1 summoner in imperial city
1 summoner in imperial city another building
1 near the dock near imperial city (the one that is very close to the city)
1 river town city
1 summoner in jungle pyramid below demon island in the west of the green forest.
1 in yellow city below sphagetti monster temple in the desert region
1 in the outpost where you come into sushi island
1 in Mcguffins castle city
3 inside the east area of sushi city - they hide below in the pink trees.

The only acheivement that I could not get yet is the "Heroes vs the rest of the world"
Someone please attack me in league :(

Did you know that the Flying Sphagetti Monster has a real religion? (tf)
https://en.wikipedia.org/wiki/Flying_Spaghetti_Monster

Know any more Trivia? I'll add to this section if you tell me.

Thanks for all my friends who supported me to make this guide!
Special thanks for JurasskPark for helping me validate things in the game.