Thanks for the feedback, glad to hear you liked the mechanics !
I missed some time to have the game tested by someone else, so maybe some parts are a little bit too hard, sorry about that.
Actually I just got through it! I didn't see (SPOILER ALERT!!) that I needed to step on the button at the same time that the turret hits the light crystal. Man, with some graphics improvements and more levels, this could be published on steam!