The Cocoon achievement is supposed to unlock after you see something when looking inside a specific toilet in Chapter 2. However, nothing new happens no matter how many times you look into the toilet. The achievement is currently unobtainable because an event isn't triggering after you see something inside the specific toilet. For now, I provided a quick fix below until whenever the developer updates the game.

1. Go to the www\data directory of where you installed Dead Dreams.
2. Backup Map005.json before you make any changes if you want.
3. Open Map005.json on Notepad or another similar software.
4, Search the following code in the json file:
5. Replace the code with this code:
6. Now, search the following in the json file:
7. After the comma, add the following code:
8. Save the json file.

Now, the achievement should unlock when you look inside the toilet. I just move the code in Step 4 to be after the code in Step 6. The code in Step 5 is a placeholder I added and it's required for the achievement to unlock for some reason. The issue seems to be a mix of incorrect order of code execution and something else. Moving only the Cocoon achievement code from Step 4 to Step 7 didn't work.