An idea came to me for a monster vs monster mode(no hunters, or maybe simple ai hunters, but I feel player hunters would be too good and ruin the mode).
Each player starts on opposite ends of the map and the map is cut up into “territories.”
Each territory is like a hold point; you can claim it by simply existing in that territory for a certain amount of time(15-20 seconds?). When a territory is yours you get bonus exp from the creatures you kill, and therefor level up faster in your territory. Maybe you could also get some constantly building exp(every so many seconds) based on how many territories you have claimed.
And if the ai hunters are a part of the mode, they would obviously be worth some decent exp for killing.
First to 5 player kills(or 10 if 5 is too short of a game) wins.
There could also be a hold point variation where you just generate points towards winning every few seconds based on how many territories you have claimed.