Good game, but could do with improvements
After playing this game I can honestly say I'm torn between what to say... so I'll list them.
Good things:
The difficulty
The fact Exp carries on from each game/failure
The music
The enemy variety
It's addictive
Number of Lives is just right
The fact I can make another wave appear for maximum carnage
The upgrades
Bad things:
Why am I always shooting? Are my arms malfunctioning? This robot ain't going out in public.
Why is it whenever I so much as touch an enemy, I lose 600 hp?
For those reasons, you get a 7/10 and a 3/5 :)