Here is the full list of all 19 PsychWorld achievements.
Start to destroy your first tree.
Destroy 1,000 total blocks.
Destroy 5,000 total blocks.
Craft 25 items.
Kill 100 enemies.
Murder 500 enemies.
Ruthlessly slaughter 1,000 enemies.
Absolutely obliterate 10,000 enemies.
Destroy 50,000 total blocks.
Craft a pickaxe.
Craft a mana crystal infused pickaxe.
Craft a quantum pickaxe.
Craft a sanity essence pickaxe.
Kill the Automated Home Protection Golem.
Craft a wooden sheet.
Obtain the fabled Sceptre.
End things on your own terms.