I will use a few cheats:
-to make this challenge a bit harder, I set current HP of non-Crono to 0 (exception in 3 fights, e.g. when Crono isn't there), else they absorb a few hits.
-get Crono back right after Black Bird/before Death Peak; it is his run, but on Black Bird he glitches the game...
-I will use (off-screen) a party on Black Omen for randoms, the dungeon is optional and most random encounter are even more impossible than the boss fights.
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