Here is the full list of all 30 Devil's Hunt achievements.
Finish the game on easy difficulty
Finish the game on medium difficulty
Finish the game on hard difficulty
Collect 100 souls
Survive the nightmare
Commit suicide
Defeat the Protector
Escape Satanael
Defeat Aldo
Kill Embry
Sign the pact
Transform into Demon
Find all the secrets in Miami
Find all the secrets in Jerusalem
Kill 4 enemies at once
Do 100 finishers
Drain 75 souls
Unlock all Demonic skills
Unlock all Angel skills
Unlock all Void skills
Complete the game without dying
Knock off 20 enemies from a ledge
Kill an Angel
Kill a Demon
Unlock all skill trees
Play any chapter once again
Receive a mark from Belial
Find and destroy all the Lucifer mirrors
Save yourself from certain death
Use a teleporter