Visuals look great.  The game play was solid but I will say since the mouse isn't locked to the screen it's very easy to click out of the game window. 

Very cool game from what I could play. Unfortunately I could not find a way to make window bigger or make fullscreen. Please figure this out and I will play it again because it seems pretty fun. Love the music track; really gets you pumped before you even start playing!

I won’t mention the small screen, cause it already has been.

Some aspects of gameplay were good, moving with the keyboard and aiming/shooting with the mouse felt good.

However, some aspects felt a bit frustrating.

• Jumping between gaps (if you aren’t on the ledge you can’t jump, however some games give you a little forgiveness; see Tip 4).
• At one point I got stuck under a platform and couldn’t move. Maybe shrink the collision box of the player a bit.

Just some suggestions.