Some changes I think would make it better:
If you do not come into within a certain range of someone for a set amount of time your gone.
Lavagun should have fire effect and get ammo boosts with slime cartridge
or make Lavagun a purchasable weapon because is next to impossible to get kills with on just Guild Wars.
Get a new map when you press m
Other than that congrats on an amazing job well done.