This update adds several new player options. You can now turn on/off the following: sprint, fast movement, turbo fire mode (where all weapons fire as fast as you can click your mouse), infinite ammo, and spawn beams. We also lowered the number of players required for achievements down to 6. Also changed the name of Murder Games to YOLO Mode!
We'll probably release these changes (minus the achievement thing and YOLO name) for the Xbox version soon.