(Spoilers ahead)
Good tip for everyone in hopes of winning the final boss: Do NOT waste your Dazzle Blast on any but the last group of hyenas that lead you to kaheem's property (save all of it if you're able to pass them). As far as I'm concerned, there are four DBs spread throughout the map so far, and I have made the biggest mistake of all that is wasting them on the last two groups of hyenas and overwrote the save. With a fully leveled up save (lvl13) and 5 tasty burgers, I didn't manage to kick his ass, but get mine fucked. A good strat I found was not blocking his wound ups, since half the strikes are misses: if you get lucky, he won't drain 80% of your life (choices). Instead, Focus or attack him, because you can use the burger on the next turn if he got you good. A bit riskier, but at least I got more hits in before innevitably falling to the scent of defeat.
This was posted 65 days ago? How did I not see it? Weird.
Well, for what it's worth: there's a "trick" to the Khazeem fight. If you're just trying to brute force him it CAN be done, but you're making it way, way harder than it needs to be. Actually, I gated off Dazzle Blast from his fight a while back, so maybe it really is impossible to brute force now.