fun concept, from the comments i could easily see this being inspired by The Cube. Imo the animations and graphics could use a lot of work. The player doesn't look like they're actually holding the weapon most of the time, and the transition between reloading and idling/running is rough. Also, the graphics could use some post-processing and more consitency imo. The sound effects got really repetitive/annoying as well.
This game has a lot of potential with some more polish, but good job for just one week!