Here is the full list of all 14 Woof Blaster achievements.
Rage 5 times during a level
Kill a boss solely with regular bullets
Buy all power-ups
Finish the game without using power-ups
Have £1000 at the beginning of a level
Obtain no money during a level
View the credits
Collect all slices of pizza and become King of the Dog Planet
Buy all bullet typess
Buy all rage forms
Lose the game by letting the cat get the pizza
Buy 5 extra hearts
Take no damage during a level
Figure out how to unlock cheat mode