You might want to consider removing the stat bars and just display the numbers, because the bars seem to cover things as you progress in the game. Also, HP potions are sort of pointless right now since it's pretty likely that the enemy will do more damage than you just healed while you'll have done no damage to them. Maybe have them heal 50? Lastly, after buying my 4th stealth I started to notice that I can get enemy HP down into the negative numbers with it lol, so you might want to address that. Overall, I like the way you're headed with this, and I hope you keep on working at it.
The game is a great idea, and I've always wanted a multiplayer pacman online, however the controls respond late and it really is too slow. I really hope you keep working on this!