Kill two monsters with one shot.

Buy 3 coin packs.

Buy a skip pack in the Store.

Buy a solution pack in the Store.

Kill an enraged monster.

Complete a level with 3 stars.

Skip a level.

See a level solution.

Hit a monster in the head.

Complete Yellow Jello with all stars.

Complete Purple Jam with all stars.

Complete Monstrocity with all stars.

Complete Frozen Mellow with all stars.

Complete Lava Lamp with three stars.

Kill 100 monsters.

Kill 300 monsters.

Kill 40 enraged monsters.

Kill 50 monsters.

Complete a level with the last shot.