Nice concept, we were two to play it. And the "stealth" part work great but the controls were strange. fire take too much time (I prefer shoot faster and aim less good, and aim when you are hidden is hard). And we founded that move is a little bit slow... But this is a good start for a great multiplayer game!
Thanks for playtesting! I guess the somewhat "slow" speed makes more sense for 3- or 4-player matches. If you want you can try to play around with the values in the options.txt file - turn up "playerMoveSpeed" from 8.0 to 9 or even 10. To change the shooting speed, "shootPowerMinTime" and "...MaxTime" define how long you have to aim until the shot gets full power, and "bullletStartMinVelocity" and "...MaxVelocity" define the shot's speed.
We try with playerMoveSpeed to 9 and shootPowerMinTime to 0.1, and it was really fun (less hide-and-seek but not so less).
If I can found more tester, I would try this with 3-4 players...