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