My idea would be to use the adventure module for all way walking.Dont worry about stats,well i mean you can just tell the player the stats,you dont have to keep track unless they are going to change.Alot of things can be illusions or allusions.I have not made a beat em up, but i have played several.Strength and speed are usually the most impotant
stats, and health
. So 3 sounds good yeah.
Maybe for combos use , try to make it by enemy states. Like the enemy enters a certain"beat up" state, thats when i can now grab them or do a super kick. Or same with the player,kick one puts you to a certain state,now kick 2 is available to use
Or possibly variables with timers,that would be best. I kick once,for the next second or 2, i can do kick 2.I have no knowledge about timers, these are just some ideas.