I quite enjoy this game, it has a very simple and charming appeal to it. The fact that very little information is given besides basic controls was frustrating at first, but with a little push its easy enough to find out what does what, not to mention it has a satisfying feel to it when you figure it out. Such as invincibility or shooting specific blocks to kill enemies. It's fun to explore the entire level to see how much love this creator has put into making this game. Once finding the exit there is little reason to explore the rest of the level besides the fact of finding out if there was something, or maybe you are a completionist that enjoys killing mobs. Controls are very nice, being able to get that shot in on an enemy is crucial and i appreciate when a mob can be stunned. I think having 2 lives is a good challenge as well. Seeing as there are more than enough healing items to get yourself through. This game reminds me of games pre-2000 in a few ways and its a nice change up from what big companies have been bringing out. I look forward to seeing more from this creator, or when this gets out of beta. I think it has a lot of potential.
If you like puzzle games i will be the first to admit the later levels will puzzle you but it's fun and has that worth while feel when you know you reached the end. The creator sure has thrown a couple loops in there but enjoyable nonetheless. My tip for those reading through the comments for spoilers is don't hug the wall. That only works in real life ;)