There are 2 types of achivements: story related and missable achivements. The first one cannot be missed, and you get them as you progress in the game. The latter is not just missable, but tricky and needs sharp eye... and being bored/curious so much to check every single object in the game. Let's check 'em out!

How surprisingly, you can't miss those, as you get them by progressing in the game.

The Doll Maker
Solved the puzzles in the doll maker's house.


Frequent Visitor
Found the frequencies for Qardash.


Spaghetti
Found the Spaghetti Man


"Signed"
Managed to get the card "signed" by Phil.


Fischermann
Seems like he had an appropriate name!


Sweet Dreams!
No one's stopping you now!


Sail Away
Helped the stranded sailor.


Located the Name
It starts with "Monkey".

Take a photo of 7 special character, once you give him the card to Dabchick with Phil's "signature" on it. After that, you are able to obtain the camera from Dabchick. You must make a photo about the following characters:
▪ Dabchick – Right away you grab the afromentioned camera, ‘cause at one point, you can’t go back to his place, so take a photo of him first! Police shuts down the underground office.
▪ Phil the Elephant man – at Spaghetti Man’s house, ‘til you can, as near the end of the game, the house will be unaccessable! As he escapes again but this time with the Spaghettiman
▪ The Fischermann – You must make his campfire bigger AND before giving the potion, but it’s actually kinda unmissable, as you need to take a photograph, in order to give him
▪ The Old Sailor – Before giving the tobacco to him
▪ The Opera Cat – Way before making contact with the counselor about your life, so take the photo quickly, as he disappears too! Thanks to the oiled orange juice, we send him to hospital ._.
▪ The Scarecrow – You can make a shot, right after unlocking the swamp area
▪ The Superfrog – Meet him at the Dark Alley, I took a photo at the first time, so I say you should that too.



Quite simple: Go to the lighthouse, pick up the vinyl record, then go to Mizuki’s apartment, put to the gramaphone, use it, and done! :D


Check/examine the following pictures in the game – paintings are excluded as far as I remember -, whom actually were backers of Memoranda, during it’s Kickstarter campaign (although there is a character in the game who was also a backer, you can found him at Vanya’s coffee, altough, you can’t take a photo of him, as it is more likely a part of the Artsy Photos achivement)
▪ Vicky's photo - At Mizuki’s apartment
▪ Movie poster - At 4th floor
▪ Arash' photo - At the Lobby
▪ Michael's photo - At the lighthouse
▪ Gabor's photo - Barbara’s husband at the flower shop

Thanks for reading this guide, it was fun to made this one. Also big credit for the developers making this special and atmospheric game! It's a must play experience!

(and now, I gonna read some Harukami novels)