buoyant leaf
Test various martial arts in the game and see if they feel smoothly. Test punches, kicks, blocks, parries, grapples, and throws. There's already a machete in the game, so any kind of kali/arnis demonstration would also be great. Maybe even let martial artists test the combat.
pliant plover
Awesome
shy trellis
modern lantern
Feel like we would need actual martial artists to test that, and even if they do, wouldn't it just be martial artists who know how to... Do that stuff?