SD Gundam Force Codes -

 

Super attacks:
Notice the yellow bars under your life bar. Keep attacking an enemy. Once it gets filled up or is all glowing, press + .

Levels:
Notice the sphere like object at the top right corner. While you are fighting, it grows. Here are the changes:

Level 1: Nothing
Level 5: Improves attacks
Level 9: Killer level (otherwise hyper)