What's the point of having an inventory if your character is automatically going to use a predetermined object on each hotspot? Also, I should be able to pick up the blue cloth from the beginning.
Those who say it's a ripoff of red remover really should play past the first few levels. This game is basically what one would call a clone, but not a ripoff: Same premise, but creative enough to introduce some new concepts to the level design. Certainly works for me. :)
These games are masterpieces. Though you really should tell the player that the rifle is scoped; it didn't cross my mind. Also, a minor complaint: I found the "disable the alarm" puzzle in the beginning inelegant... you could have fit a deduce-the-code kind of puzzle there, it would go better with the style of the rest of the game.
Bug: I was playing a level and went to the level screen and then the level I was playing was suddenly locked again. I'll have to beat the previous level again.
I know this sounds like nitpicking, but... "photons" really doesn't fit. Those are supposed to move at a constant speed, ie the speed of light. You should have called the little balls "atoms" or something like that...