Here is the full list of all 35 Avernum 3: Ruined World achievements.
You've found 8 of the Xian items.
Dig up 50 caches.
The mad priest of the troglodytes has fallen.
You found one of the great artifacts of Valorim.
Join the Anama!
Get the blessings from five stone circles. Glorious gifts await!
Get ten priest spells to level 3.
Get ten mage spells to level 3.
Get five mage spells to level 3.
You've read 15 books.
Sanctify five altars.
Find 50 outdoor locations.
The bugs were squished.
Get five priest spells to level 3.
The slime has been mopped up.
You've finally returned to the surface.
You've looted the giant treasury.
The troglos and giants won't be a problem now.
The golem factory was shut down.
You've dealt productively with the queen.
You got past the alien beasts.
You have won the Avernites a home on the surface.
You hunted down three monsters for a bounty.
You won Avernum 3: Ruined World on Normal difficulty.
You won Avernum 3: Ruined World on Hard difficulty.
You won Avernum 3: Ruined World on Torment difficulty.
Craft five nice magic items.
Have 12 potions made.
Find 150 outdoor locations.
Get twenty mage spells to level 3.
Get twenty priest spells to level 3.