I really liked this game, it reminded me a lot of a blend of metal gear and a Link Between Worlds. The game play was simple enough to grasp, but not so easy I was flying through every level. The sound design was really great as well.
I think one thing you could consider in the game play would be collectables or something extra in the levels that are more challenging to obtain and optional just to break up the game play a little bit so it isn't just point A to point B.
Overall it was a fun time and I think you did great