Pretty easy to figure out on your own but heres what to do
for those that don't wanna figure it out.
Striking
-Hit Opponet 3 times with B button strike
-Hit Opponet 3 times with A button strike
-Hit Opponet 3 times with AB button strike
Grapple
-Do Grapple B button move 3 times
-Do Grapple A button move 3 times
-Do Grapple AB button move 3 times
Vs Down
-Do any move 3 times when the opponet is on the ground
Back Grapple
-Do any back grapple move 3 times
-Reverse a back grapple 3 times
Vs Running
-Do 3 vs running grapple moves
Running
-Do 3 running attacks
Vs Corner Running
-Do 3 Running into Corner strikes
Vs Corner Grapple
-Do 3 Corner Grapples
Top Rope Flying (Down)
-Do 3 Top Rope B moves
Top Rope Flying (Standing)
-Do 3 Top Rope A moves
Taunt
-Throw opponet outside of the ring and taunt 3 times
Tag Team
-Do 3 Double team moves against guy in red
Triple Team
-Put each guy on shoulders 1 times
That should do it, when you're done you unlock the trainer guy.
Please don't steal, and if you do, give credit where credit is due.