Here is the full list of all 42 Pleh! achievements.
The base game contains 41 achievements, and there is 1 DLC pack containing 1 achievements.
Push the chair 500 times
Push the chair 1500 times
I bet you think you're so funny.
I AM EVERYWHERE
I wish we could stay like this forever
Thank you VERY much for playing!
This door was not one of them
10.17
Cracked the mainframe
Depression
Find all 10 hidden transcripts
Quit the game at the warning screen
If you're reading this, BIOSener.config installed correctly. If you're not reading this, BIOSener.config did not install correctly
Carry on.
I respect your wishes.
Anxiety
A clock, a piano, and a girl. What do they all mean?
Sing happy birthday twice
Remember to wash your hands!
Agony
Dullness
Push the chair 100 times
Consider this your final warning
Disappointment
Type "null" when null
Demotivation
Misery
Thank you for watching the credits!
I should have known.
Please don't take me away...
Desperation
Walk backwards for 10 seconds
Please leave me alone
Stop taking them away from me!
Push the chair 50 times
Push the chair 10 times
Afterlife
Suicide
Please come back...
Beat Pleh!
Press H to begin
Complete the new content update