Here is the full list of all 14 Achievement Simulator achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Unlock all 100,000 achievements
Unlock all achievements in the 24 games
Unlock all other achievements
Unlock 75,000 achievements
Launch the game 10 times
Unlock 50,000 achievements
Unlock all achievements in any 12 games
Unlock 25,000 achievements
You found all the hidden trading cards
Earn a lifetime amount of $5000
Have all 24 games bought in the store
Click a total of 2500 times
Bought all upgrades available
Click the game logo in the main menu