When life gives you lemons, draw faces on those lemons and wrap them in a blanket. Ta-daaa! Now you have lemon babies
Publish a certain amount of levels
Rate a certain amount of levels
Get a certain number of rates on a level
Be a member for a certain number of days. Login required to activate new achievement.
Add unique images to other users' levels (must be relatively new levels).
Get a certain number of contest points.