This is quite an interesting game! Not sure but seems there is a bit of some attack on titans vibe here with the movement controls. Speaking of which, is very hard to use effectively, and I am ashamed to admit that I rage quit after 40 min of gameplay when my fingers starting to be painful XD. Was going to ask if there is an end to the climb but apparently there is. At least I got to see the HI text somewhere on the left though.
Beside the unforgiving controls (and that's pretty much intended), I think the enemies are much worst and unfair at times. While its able to defeat the non-spike ones, being able to shoot so quickly really makes defeating one not a viable strategy at all. It doesn't help with the fact that the map is huge, and player don't really know where to go.
With everything said though, this is a nicely built game indeed! Good job!