Here is the full list of all 27 Hooligan Vasja: Christmas achievements.
Finish a level without incurring any damage
Defeat Krampus
Defeat Hans Trapp
Kill any boss with the last bullet
Break off a balcony from the wall
Do not let a bird to be killed
Chase away 250 goblins
Throw 300 presents
Chase away 125 straw scarecrows
Defeat Babay
Restore 1000 HP
Defeat Zwarte Piet
Defeat Gryla
Throw 100 presents
Throw 200 presents
Chase away 75 ghosts
Kill 4 enemies with one firecracker
Kill an enemy with falling balcony
Kill 5 enemies with one firecracker
Hit 50 cats jumping upon Vasja
Kill 5 enemies with 5 bullets
Chase away 25 trolls
Chase away 15 daemons
Kill 3 enemies with one firecracker
Manage to die while medikit is nearby
Use a firecracker
Start playing game in Christmas mode