The game has 278 broken achievements. This is because it was made to grant 5000 achievements starting from ID=1 to ID=5000. However the last 278 achievements have their ID numbers higher than 5000.

Since this is just a very quick fix and because of the way the game unlocks achievements it will take a long time to get all of them. There will be several longer breaks with no achievements popping, this is by design, just keep the game running.

127 achievements should be granted fairly quickly after starting the game taking the total to 4849/5000.
1 achievements will be granted about 15 minutes (858 seconds) later (4850/5000).
138 achievements will be granted 37 minutes (2222 seconds) later (4988/5000)
11 achievements will be granted nearly 2 hours (6394 seconds) later (4999/5000).
1 achievement will be granted nearly 8 hours (28424 seconds) later (5000/5000).

In total the game has to be running for 13.5 hours (48444 seconds) to get all the achievements and the progress isn't saved, so make sure to not quit it too early.

1. Download this file (remove spaces):
   https:// mega. nz/#F!lo02CITL!D7r4o4KfeP7fl5DD0egNVQ
   
2. Replace the original file in the game folder with it.
   
3. Run the game and idle it for 13.5 hours.