Complete the last level.

Kill your first enemy.

Kill 100 enemies.

Kill 500 enemies.

Kill 1000 enemies.

Kill 5000 enemies.

Kill 10000 enemies.

Collect 5 stars.

Collect 15 stars.

Complete all levels with 3 stars.

Die against the last enemy.

Survive with less than 10% health.

Open the instruction window.

Open your first egg.

Open 10 eggs.

Open 50 eggs.

Open 100 eggs.

Use a skill for the first time.

Use 50 times a skill.

Use 100 times a skill.

Use 250 times a skill.

Use 500 times a skill.

Use 1000 times a skill.

Survive 1 minute in the endless level.

Survive 5 minutes in the endless level.

Survive 10 minutes in the endless level.

Survive 30 minutes in the endless level.