Some of power ups can be used as keybinds.
Every player kill will give you X points, or any currency (for a round of course).
and if you have enough of points, you can use some of power-ups, for example:
- Lightbolt
Strikes lightning at every player at special radius. - Magnet
Attracts player you chose against you (so you can do critical hit) - Dash
A small dash, that can instantly move you by double pressing W,A,S or D. - Ramming shield
Similar to zombie massacre one, you cant use weapons on use for few seconds, but you have shield and speed with a bit lower gravity, so you can ram into everyone (but each ‘polygon’ of shield breaks on shot) - Aim
You getting help with aim, but your weapons damage is lower. - Barge Hit
I imagine this as Blur game barge, damaging players in radius and blasts from you.
Having these at least in special gametype would be fun in my opinion.