Simple boxing game use only the left and right arrow keys for controlling your boxer.

The red bar is health. Getting punched will decrease
The green bar is stamina. Punching, blocking, and taking uppercut all use up stamina. If it's depleted you become exhausted and will be left open. There's a blue bar marking if making a punch then will exhaust you.

When spending your points:
Strength increases the damage your punches do.
Speed increases how fast your movements are.
Endurance increases your stamina.
Conditioning increases your health.

There are more instructions on the start screen.

Don't hit the 'w' or 's' keys, those are debug buttons I forgot to take out.