it could use a lot of improvement, its a good concept and I wold defenetly like to see a sift head multiplayer, but this is not good.
to me it felt like a run and gunner but with limeted health, with a set up like that your bound to just end up with a generic game where people just spawn in and shoot blindly at the enemy untell they die than they rinse and repeat.
first off its impossible to take any form of cover in the arena like battle grounds.
second the enemys need to drop something that makes killing them worth it, heath for example.
also I recognized some of the battle music from the game timesplitters you should probably check that out.