Pretty good.
Good first person shooter but easy. Here are a few things you could inprove on:
1. The bullet marks don't move when i shoot someone, they just stay in the same spot.
2. Floating hands was kind of weird, try adding some arms next time. Also mabey a reload function.
3. The "Ready, Set, Go" thing got kind of annoying, i don't thionk people need the time to get ready, just let the game flow.
Other than that well done.