Very interesting mechanics. I like how you are able to wall surf/ cielling hop, and I think thats a really cool addition for kiting enemies. The spike is a really cool mechanic, though it is really hard to aim at times. The spike is a little slow to return, which makes it hard to aim when peaking enemies from cover. I was doing a lot of clockwise/ counterclockwise full room kites and would have plenty of times where I was waiting for the spike to come back 1 screen away.
Your levels are pretty well done and diverse, however some of the mechanics are not very intuative (such as player being able to go through wood crates, and which types of obstacles can be destroyed). Elements such as those should be communicated to the player at first glace, to make the game less frustrating to play.
As is, pressing escape doesn't pause the game, but instead instanly kills the player. I was caught offguard by this on my first playthrough, and lost while in a very good position.
As mentioned previously, some other additions such as endless run, training mode, and even multiplayer/coop would be nice to have. That being said, the core gameplay loop if very fun and unique. This game definatly has a lot of potential, looking forward to updates!