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