Street Fighter X Tekken

-From the main menu, select Challenges. Trial mode will be on the list here.

-Choose a character (I chose Ryu as his moves should be the easiest for any returning SF player.)

- The first trial will be a very easy Collarbone Breaker move. (Simply approach the CPU and press FORWARD and press Y [default controls, otherwise MEDIUM punch])

- Success! and the achievement will pop.

This achievement asks you to clear one trial with any character. Easy enough to do!

On the main menu, highlight Challenges and hit A. It will bring up a list. On that list has Trials. Hit that and you'll be entering the character selection screen.

To make this easy on you, just select Ryu, which is what I did as well.

His first move is the Collarbone Breaker. When the trial begins, move close to your opponent, then press/hold forward and hit Y on your control pad. Ryu will execute the move, the trial is completed, and the achievement is unlocked right then and there.

Have fun and good luck!