Trials are various challenges that will put your skills to the test; some will be easy, others will be a pain. There are 20 challenges for you to complete. The first 12/20 trials are already unlocked, while the last 8 will require you to purchase them for 40 points via UPlay. (UPlay can be accessed from the Main menu.)
Note: You will earn UPlay points for earning these achievements.
10 points - Here I Am
20 points - King of the Hill
30 points - Earth United
40 points - Earn "Closure
Tips: Making sure to use dodging effectively and always time them well. String together combos and tag combos for maximum damage. Anytime you're in a jam, use that combo breaker! Often you can start off with a combo breaker in order to kick off a tag combo. Finally, and most importantly, read to the challenge description! That may break up a lot of confusion when you're trying to complete those lessons.