Hi, from how my experience w the boss was, it's more of a hit n run/wait fight, stamina regenerates, but dodging, just like striking, takes 2 stamina from you. i thend to just punch once, if not twice, then dodge in/towards the boss so i am behind them and dont get hit. for this being a prototype, it is one where you'll have to be aware of your resources more.
(also imagine a healing-item just being a gamer-sups or sth of the like! Felt like i should express that for some reason. Maybe she'd find one in a dumpster or at a garage sale)