Well, I just beat the game, pretty good. So here is my review:
The Good:
Puzzle Design: 8/10 Really good brain busters but, some things were just impossible to know about without you telling us...
Lighting: 6/10
I loved the color, but some of the things were off. Lights without light sources... Things that were darker than they should have
Level Design: 7/10
Realistic items placed in the right spot. Great Work.
The Instructions: 6/10
I loved the way the instructions were told! There really should have been something about the fact that the the pineapple box was key in all levels in one of the instructions boards.
The Bad:
The A.I.: 3/10
I could stand in front of enemies and they wouldn't shoot me. The only time that there ever was a chance death was from that mini-gun guy.
Objective: 5/10
The player really doesn't know why he has to destroy pineapple cylinders in the first level, he doesn't know what the point of putting the music in is (but I'm guessing that they were just thing added for fun).
Overall:
Over All Gmae Score: 5/10
Some of the smaller things could have made the game better.
Great game by the way!
Cheers.