Nice game, looks very good, but I got stuck on what I think is only the first level (I have no cannon, don't know what to do)...
I think the game would benefit from having a pointer or something at the center of the screen to let you know what you are pointing to and what you can pick up (maybe it could have an animation, change color or something when you are pointong to a box for example).
Also, I believe you should remove the shadow cast from your capsule character (it does look pretty weird tbh), maybe you could replace it with a siple circle shadow cast on the ground.
Last thing, the footsteps suond seem a bit off, I would suggest to either remove it or slow it down.
Ultimately, the game looks very nice and also feels very nice to play, good job :D