You have finished 6 Mountain levels.

You have defeated the Mountain boss.

You have finished 6 Underground levels.

You have defeated the Underground boss.

You have finished 6 Sky levels.

You have defeated the Sky boss.

You have finished 6 Winter levels.

You have defeated the Winter boss.

You have finished the level without any life loss.

You have finished the level without being hit.

You have defeated 25 enemies.

You have defeated 50 enemies.

You have defeated 75 enemies.

You have finished the level without killing any enemy.