As above, refresh level is very important, but with the assumption of submerged, Buffy, at least, is rather easy.
Skills as opinion dictates (but with Lore, Fists, Athletics, Weapons at least at Good, IMO). Powers would include Inhuman Strength, Inhuman Toughness, Inhuman Recovery (at -2 each, IIRC). That's a -6, with 3 stunts of any choice.