Few things I've noticed:
* player is jumping too fast, make it slower (will looks much better)
* player is able to move over hight things (example rails on boat)
* crosshair sometimes goes crazy (even if I'm not shooting, it moves)
* add in game control menu, so players could be able to adjust move speed run-time
* some parts of water are black
* sun rays looks strange (at least for me)
* I get strange crashes while launching game, but after closing them game runs
* I don't see recoil