Its quite simple but that is to be expected as it seems it is still in very early development, I'm sure you have many plans for future depth.
One thing I did notice is that the lasers don't go to the crosshair over longer distance. Stand in one corner of the room and shoot at the opposite corner. The laser doesn't hit at the crosshair. I imagine it is the same for very short distances too. If you send a raycast out of the middle of the screen, you can get the position of what is under the crosshair. Then, you can point the weapon to this position.
I like the enemy robot models, but I feel there is a style mismatch. The robots in the store and the gun don't look consistent with the enemy robots. But again, its very early so some of these things are probably placeholder.
I'm sure with more work you could make an interesting game out of this. Do you plan to have some stealth elements in the "escape from the ship" mode?