TY the Tasmanian Tiger

*Online required*
When you come across a bonus game, such as a Time Attack, or a Danger Zone, you will first have to beat the objective of the game (or just immediately die). The first game you should find in the first few levels, it is a "Danger Zone" mission, and once you find it (it will look like a hole in the ground with a giant exclamation mark over it), you can enter it. Once you beat it, you will have the option of challenging a friend to beat your score. The best part about this achievement, is that the friend you challenge doesn't even need to own the game. The pick someone on your friends list, hit the challenge button, and the achievement will pop.