Full list of all 42 Infernax achievements.
The base game contains 30 achievements, and there is 1 DLC pack containing 12 achievements.
Leave all the work to Tancred
Complete the game as good after turning evil
Travel to the future and defeat Azazel
Complete ultimate evil playthrough
Slay Sir Tancred
Complete evil playthrough
Save at all statues after becoming evil
Up Up Down Down Left Right Left Right....etc
Begin down the path of evil
Listen to Hans' story... ALL OF IT
Complete ultimate good playthrough
Obtain the final weapon
Get the Necronomicon from Robert's cold dead hands
Complete good playthrough
Complete the game on Classic Mode
Defeat Belphegor, The Father of Destruction
Defeat Alastor, The Hope Devourer
Obtain the final armor
Defeat Apollyon, The Cursed Cherubim
Cleanse the dreamscape
Have Gregor perform an exorcism
Defeat Paimon again
Enter a code in the Game Wizard book
Defeat Leviathan, The Sunken Corruptor
Reflect a projectile and defeat 3 enemies
Defeat 5 enemies with one Thunder/Fire storm
Learn the Guided Strike Skill
Defeat Kalamon, The Glutton of Pain
Summon the tornado
Defeat Mahalmon, The Spewer of Lies
Make the Mayor work his core
Play a game with a friend... with guns...
Complete a game with a friend
Fully upgrade all the Squire's tools
Purchase an Evil tool for the Squire
Take a shortcut to Stormheim Castle's chest
Block a projectile with the Squire's shield on the ground
Parade your Duke in any village
Eat. the. wall. chicken.
Sleep until you can't sleep no more
Purchase the Squire his first tool
Turn around and take the boat