First of all, you NEED to tell the player in the first screen of the tutorial that Q and E change cameras. The only thing the player sees is WASD for movement. I cannot reinforce this enough: Without informing the player of that, the game is unplayable.
The collisions are, as usual with Unity, off. It's easy to collide with "the air" near barrels and decorations and the collision drag is awful. Change the physics materials of those items (not the player character!!) to try and fix this.
Graphics are nice enough and the main character is kinda cute. I like how you convey the story through environmental storytelling. Nice job.
The music is OK but you need sound effects desperately, not only for the doors and such, but for the enemies, to allow the player to use the sound as a tool for locating them.
I'm not a fan of the control system, but that's more my taste than anything else.
Good job :)