Fun - Okay against Bots i just get the Sniper sitting on Top of a Heigh Stone and Shot everything down that Moves.
The Game seems to be already in a good Structure and you should keep working on it.
The Multiplayer Mode and everything around might was alot of Work for you.
Some Ambience Music missing
You might should think about some sort of Kickstarter or Publisher to help you to finish and Polish it.
The Weapon Transition feels very Smooth
Pick Up Weapons not work with E they work with F, Nice Try haha!
Btw i think you get way to less Attention for your Game so far!