I'm really sorry, but I only made it as far as the frog. I did find the frog's controls a lot more intuitive than the snake though! Maybe changing the order of the levels would be a good plan here, and ease the player in a bit!
visually it works well, easy to see where you are most of the time and find your enemy. the shadows help a lot. I could probably have used a helper to help me find the pyramid pickup.
Speaking of that pyramid, I enjoyed having to go and collect it after throwing it out, but often, due to the 1 button control philosophy, it was easier to just plant myself in the wall and shoot the enemy when he was also on the wall. I could have gone with a second button to fire, and an incentive to keep moving. Thanks for sharing your game, I enjoyed playing it!