Really cool entry!
The game feels great to play.
The game looks good, the mix between 3D and top down works wonders, and the addition of height also works really well.
I would've liked some music, but the sound effects work!
In terms of feedback:
It seems like the tutorial can only be played once. I accidentally exited earlier and couldn't play it again, so I had to guess my way through the real game.
I was really confused by starting with no weapon, since I had no way of opening the crates. Then I eventually saw the pistol and it started to make more sense for me.
Because of how guards work, it is possible for them to touch you, push you around, and shoot you but still miss you. Maybe this is because the projectile spawns inside your collider!
Solid entry, keep up the good work!
PS: I think it would've been cool for this entry to be a WebGL build! It definitely means more people will play it. Is there any specific reason you built it stand-alone?