Here is the full list of all 35 Avernum 3: Ruined World achievements.
Get ten mage spells to level 3.
Sanctify five altars.
You've looted the giant treasury.
You hunted down three monsters for a bounty.
Get five priest spells to level 3.
Get five mage spells to level 3.
The mad priest of the troglodytes has fallen.
Find 50 outdoor locations.
The bugs were squished.
Join the Anama!
You've read 15 books.
The slime has been mopped up.
You've finally returned to the surface.
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 found one of the great artifacts of Valorim.
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.
Get the blessings from five stone circles. Glorious gifts await!
You've found 8 of the Xian items.
Craft five nice magic items.
Have 12 potions made.
Find 150 outdoor locations.
Get twenty mage spells to level 3.
Get ten priest spells to level 3.
Get twenty priest spells to level 3.
Dig up 50 caches.