One of my friends told me that there would be a way to make Curly Brace survive the fight at the core.
Is there a way, or my friend is telling me lies?
EDIT: Should also specify that I play the original version (free from Cavestory.org)
Can Curly Brace survive
cave-story
Best Answer
Yes there is, though the method to do so is rather arcane.
The first "make or break" moment has nothing to do with Curly herself - when you see Dr. Booster fall into the hole Labyrinth, you must not follow him. Following him at this point will earn you the Booster v.08, and Dr. Booster will also die.
If you do not follow him, Dr. Booster will Survive, and, much later, provide you with the Booster v2.0
If you have done this, you will be able to pick up the "Tow Rope" item, and pull Curly Brace along behind you when you flee the area after defeating The Core. Make sure to pick this up before starting the boss fight (it's in one of the bottom corners).
Once you're in the waterway, make your way to the waterside cavern, put Curly on the bed, use the computer to figure out how to drain the water out of her, do so, and then take her with you again when you leave.
When you destroy the fish boss during the waterway fleeing segment, Curly will automatically be dragged away from you.
If you manage to do all this, Curly survives, and you can find her in the lower right area of the plantation, though she'll have lost her memory. To fix this, you need to go to the Village Graveyard (you'll also get the Booster v2.0 here) and use your new booster to get to a mushroom you need to restore her memory.
Good luck!