Ok let's review this game..
First of all, the way you made the maps is against the way you made the aiming.
I'll explain myself better: We can only aim to the left, to the right and upwards. The maps have walls and floors diagonally, so its really hard to shoot to enemies.
Why couldn't we just use the mouse to aim?
The maps are good but for another kind of gameplay.
The gameplay is bad and for another kind of maps.
Really good quality, but the game itself is pretty bad.
5/10