Headset: press ENTER VR below, then punch a target to pick a mode.
Don't Get Hit: your rival throws punches, slow at first, then faster. Slip, duck or block with your gloves. Five clean hits and you're out.
Ball Machine: the machine shoots tennis balls at your head. Yellow: slip or duck. Red: punch it. Three at once: roll under them. Every 10 balls the level goes up.
Power Bag: 90 seconds on the heavy bag. Hit the lit numbers with the right hand, as hard as you can. The last 15 seconds are a flurry: double damage.
Slip Line: a glowing line shows where your head goes. Put your head through every ring (slip, roll under, duck), then punch the counter pad.
Players:
Quit a round: hold A, B, X or Y on a controller (Esc on desktop).
Desktop: left / right mouse button or F / J for left / right hand (hold to block in Don't Get Hit). C to duck, A / D to slip.