Great game. Seems like it would be a very fun game to develop as well given how many little tools you can make to enhance sneaking and maneuverability. Loved the dropkick. Very GMI energy.
1. I noticed there was a lot of issues with grabbing onto ledges. Seemed like the player character would often try to grab onto geometry that clipped into the wall (I found myself hanging onto what seemed like nothing on the outside of buildings somewhat often). I also had major issues trying to get in through the sliding windows in one of the levels (the character would automatically try to step through the opening when I slid the window open, but unless I completely destroyed both windows panels they would step up onto the ledge and then fall back down multiple times before I somehow fanangled my way through).
2. I don't think the weapons have any pitch rotation when looking up or down (do they?). I didn't look into this extensively, but I did have a moment where enemies were coming up a steep incline at me and it would have been nice to have been able to aim the spear down at them. (I tried to attack them but was only thrusting straight in front of me; maybe I was doing something wrong so ignore this feedback if there is a way to aim up or down and I just missed it)
3. The low resolution and sharp unfiltered textures are nice, but I think you could improve the overall look of the game if more of the textures for the environment were a similar texel density. I remember at least one house that looked very odd because its roof had pixels maybe 2-4x the size of its walls. If you're using Blender there are add-ons you can get to ensure texel density is kept similar across objects (I use Tex Tools).
Besides what I mentioned above everything worked very well without issue. Game is fun and good. Keep up the great work!