i have no clue how to get this three achievements: Chillman, um...idk, oh you dont know what alternate universe is? pls help

I meet the requirements for MacOs and when I start to play the game it does not open. It makes it impossible for me to play it.

The last two achievements I need and I can't seem to find them

i love this game

https://steamoss.com/steamstore/app/1782210/Crab_Game/