Oh I see, there are 11 sprite shits you have to get before the lights go out... those were pretty hard. All in all though, very easy, short, and not very scary. I did enjoy the graphics though.
Also, the best strategy for surviving anything that shoots a lot of lasers: just move far out of the way, don't try to weave through the lasers, then move back into shooting position after lasers pass.
Once you get the hang of it, it's too easy and too short. I had gatling and ferrari, and was about to get 2nd upgrade on boomerangs before the last level. I didn't even use rockets until the last two levels. Best way to conserve money for the best stuff while upgrading enough to stay alive is to buy every other weapon and armor.
cubes are simple:
The tree changes colors- white, red, green, and blue. when it is red, put in red cube. when it is green, put in green cube, when it is blue, put blue cube in last.
 "Electric Box"){kind=icon}
 "Dinowaurs"){kind=icon}
 "Don't Shit Your Pants"){kind=icon}
 "Chaos of mana"){kind=icon}
 "Neverending Light"){kind=icon}
 "Minions"){kind=icon}
 "Color Infection 2"){kind=icon}
 "Alpha Bounty"){kind=icon}
 "The Codex of Alchemical Engineering"){kind=icon}
 "Warbears Adventures : An A.R. X-Mas"){kind=icon}