Here is the full list of all 33 Bloodroots achievements.
Find all hidden wolves
Unlock all hats
Unlock the Frog Hat
Unlock the Rabbit Hat
Complete Game
Unlock the Crow Hat
Complete Act 3
Unlock the Dog Hat
Kill 100 enemies with a fish
Kill 100 enemies with a carrot
Get a score greater than 1,000,000
Finish any level in Act 2 in under 3.5 minutes
Finish any level in one continuous Combo
Don't use any weapons for a whole level
Get Perfect Timing on half the kills of a level
Die 100 times in a level
Die 50 times in a single room
Unlock the Bison Hat
Complete Act 2
Set 500 enemies on fire
Unlock the Deer Hat
Search for the last enemy of an area
Kill 100 enemies with an Hatchet
Complete Act 1
Unlock the Boar Hat
Unlock the Fish Hat
Kill 50 enemies with an Hatchet
Find your first wolf
Kill 25 enemies with an Hatchet
Kill every enemy in a level with a different weapon
Unlock the Bear Hat
Get a perfect score for Mobility in any level
Die at the hands of the last enemy in an area