I liked this game, but it also had it's letdowns.
*I liked the upgrade system
*Cheat was well balanced -- it gave you enough exp to pull yourself through to the next level if you really used it enough, but not enough that you use it on the first level and then pwn everything 'till level 100
*Needs a link to the medal screen from the in-game pause menu (also, your medal descriptions are messed up, the listed ones are swapped with the row above in the game)
*MORE UPGRADES. By level 15, I had 200,000 exp. How on earth could I spend ALL that!?!?!?