When playing Mos Eisley Assault, (the one with all heroes.) Choose Chewbacca and spawn at the Arena. Then jump off the skiff after you've spawned and go around to the front of the skiff, then stand in front of it and jump into the front, if done correctly Chewie should lose health, die, start to spin on the front of the skiff, and drop infinite health, ammo, and stamina regeneration packs.