Here is the full list of all 21 The Last Orgasm achievements.
Find 2 monitors with cameras
Find 4 vhs tapes
Getting into a prison
Find a monitor with cameras
Look in the chief's security cameras
Find a backpack
Kill 30 zombies
Find a shotgun
Find 2 vhs tapes
Kill 10 zombies
Kill a zombie
Getting into a police station
Watch content on tape for the first time
Watch real-time content for the first time
To die by zombie
Find Robert
Find all vhs tapes
Find all monitors with cameras
Unlock the entire gallery
Back home with Robert
Having sex with Robert