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