Many things to fix
Let me start of by saying that I found this game to be extremely fun and I am voting it 5 all the way....
Having said that, there are a number of problems with the game:
1) Every team can be defeated by simply using attack, then barrier, then rocket til the enemy is dead. The only exception is the Goldmen which you just have to attack a few time after using the rocket til your SP is exhuasted.
2) You made the experience for defeating every enemy 100, so the best way to get the grinder achievement ( or just leveling quickly in general ) is to kill Team Henchmen over and over again.
3) Not sure why, but you made the experience needed to advance in levels very uneven. At level 15 I needed 1500 exp for the next level, and at level 16 I only needed 300??
4) The weapons should have some sort of way of showing you their strength because there is really no indication of which is better.
Regardless, I had a great time playing it. I loved the customization, especially the gold armor and light sabres. The medals were also worth a lot and abundant. If you fix the problems above and make a second one, I would love to play it! Well done!