The game is good. The loop is there. Unfortunately the mouse sensitivity settings did not work for me and the slightest movement on the mouse sent my character spinning like he's/it's part of some rave fest.
Once you enter the shop to buy upgrades, I could not find the button to close that menu and had to restart the game.
How ever, this seems like it could actually make for a good shooter / simulator game and especially with multiplayer integrated could make for a great streaming game. Good work on this considering we only had 6 days.