I realy like this game :D
But I think some things could be improved, such as:
* Swap weapon while reloading. I often did not see the amount of bullets and when they were done, I always clicked (unintentionally) and the gun was reloaded automatically. This is really annoying. So why not change weapons while reloading? if you have a support, the job is passed to him :D
* The mouse is very sensitive. Put an option to adjust the sensitivity would be a good idea
* Some guns have scopes, but they are virtually useless. An option to zoom in would be good
I guess that's all. Keep up the good work and sorry for english, I used Google Translator a bit to write this review :D