Now, you know that one Cutscene where Spyro turns into DarkSpyro? If you ever tried, you notice you can't switch into DarkSpyro during it, unlike most of the cutscenes, so you must assume that it was made that way, right? Wrong, there's a trick to being DarkSpyro during this cutscene.
Simply, all you have to do is be DarkSpyro when you land the final blow to Gaul in round one.
Now, I'm sure anyone that's tried killing him as DarkSpyro has noticed, that when you attack Melee Attack him, as you HAVE to do in round one, you do hardly any damage, so unless your EXTREMELY patient, just do this:
1: Switch to Earth Breath, Earth Breath Melee does more damage to him.
2: When his health gets low, switch to ANY other breath, why? Cuz, unless it's just me, there's a glitch with DarkSpyro, where if you use his secondary attack ( The killer combo that makes you invincible while you do it) take up elemental energy if you have it over Earth Breath, but not any other breath for some reason

3: Once his heath is REALLY low, switch to DarkSpyro, then finnish him off, you should be DarkSpyro during the cutscene
