Great sidesroller. Fantastic idea, amazing retro graphics and incredibly fun! Only problem (and this is what made rage quit on the harder levels: NO CHECKPOINTS.
Also, add a storyline eg:a crazy scientist was working on a system that could think for itself however the system decides to spread and escapes facility (and maybe cutscenes?).
I think more missions, objectives, robots, abilities and security systems should be added (cameras, lasers, ect.). But for this game to be mga awesom just make it 3d (if possible)
 "Final Ninja"){kind=icon}
 "Mike Shadow: I paid for it!"){kind=icon}
 "Monstermind"){kind=icon}
 "I Am An Insane Rogue AI"){kind=icon}
 "Legend of the Void 2"){kind=icon}