A cool idea and well executed! Really my only issue is with the difficulty. I think adding a longer delay on spikes (so it takes longer before they shoot out) and a bigger field of vision would have gone a long way to making this more accessible to an unskilled player like me. I really like the different mechanics (e.g. the red/green door thingies). I was going to say red/green is a problem for colorblindness, but then I realized you have different shapes too so good job making sure color isn't the only way to encode a detail.