Here is the full list of all 10 DUNKYPUNG achievements.
Beat the first boss. Easy peasy.
Hey, not too shabby!
Good for you, now it gets REALLY HARD! XD
You thought this was tough? Just you wait!
You're getting pretty good! Now prepare your anus!
YO! Solid work!
WINNY WIENER CHICKEN DEEEENARRRR!!!!
INSERT OBLIGATORY FACEPALM HERE.
DUDE! What did you eat for lunch?!
Bela Lugosi's dead....undead undead undead