First, select the Network option. Then select the Dojo. Next select JOIN.
Select the character that you want to fight with and exit. Go into the GR
match and select the first (and only) option it gives you. You will fight
Dan, but be careful-he has a tremendous 10-12 hit combo.
Grenade in Zombie Revenge
When Fighting the big boss, walk to the upper left and stand by the box
wait for him to hit you to the ground, breaking the box open and whalla a
grenade. (throw it by pressing punch)