Here is the full list of all 32 From Shadows achievements.
Step from the shadows into Steradore!
Reach level 20 as a Vampire.
Reach level 20 as a Werewolf.
Defeat Furrious.
Defeat Abbaderon.
Hide in a barrel.
Kill Cerberus.
Buy Drake.
Buy Shadowbat.
Buy Spirit Owl.
Play with a friend in two player mode.
Watch the entire Credits.
Die.
Drink a potion - One of each kind in a single stage.
Defeat the Traitorous Vampiric Duo.
Kill Greit first while fighting the Traitorous Vampiric Duo.
Kill Trendrick first while fighting the Traitorous Vampiric Duo.
Defeat the Ghost of Abbaderon.
Find one secret.
Find 10 secrets.
Find and defeat a Glitch Imp.
Kill 1000 demons.
Kill 100 demons.
Kill 500 demons.
Kill 1 demon.
Kill 50 demons.
Collect 1 Soul Stone.
Collect 50 Soul Stones.
Collect 100 Soul Stones.
Collect 500 Soul Stones.
Collect 1000 Soul Stones.
Learn 1 talent.