This boss is incredibly tedious to fight, for me, it just sucked all the fun out of the game. Fighting for a few seconds, dying, reloading over and over and over and over again until finally you kill it... and then what? For me, the game was ruined at that point. The game had just wasted a huge amount of my time and to add insult to injury, had given me nothing for it. Not that a bunch of stars or whatever would made up for the process I'd just had to go through. I ended up finishing it as a matter of course but after that it was just a slog. Hell, even the final boss was a cake walk compared to the Sphinx.

I don't know, I guess you might be able to tweak the fight to make it less of a tedious. Like maybe remove those lightning enemies, is it even possible to dodge their fire when there is no cover around? Maybe open up the area more? The final boss was much more manageable because of the space I had to maneuver.

Anyway, My point is, the game would be better if this fight just didn't exist. At least in it's current form.