I seem to never highlight the good ones but here's a 10 minute Duck Tales run on the EU version.
Interestingly the jump is floatier in the EU version and the clock ticks slower typically giving you better enemy placement. I'm still under a consensus which version of DT can be finished faster.
Okay from what I theorize when you die in a dark world after using the Death Mountain Descent to enter the game actually checks that you're in the Light World after any death thus if you make it to a boss in this state they may or may not drop the crystal.Can be fixed by going out and using the mirror after anytime that you die.
This is a side effect from the Death Mountain Descent.
The Game Calls Light World and Dark World based on your battle with Aganihim 1. Technically you will never continue in the Dark World until you fight Aganihim 1. Thus this fight was technically in the Light World of Ganon's Tower.