LogFAQs > #914153029

MrSmartGuy posted...

You can still die, the hits just do exponentially less damage, so as long as you keep grabbing the green items that heal a set amount, you basically can't die.

The game saves your progress too, so if you've already collected say, 3 souls, when you die and load up again it'll start you from that point so you don't have to redo the whole thing.

The Omega Flowey fight is actually fairly easy. It's weighted extremely heavily for you to win after the first soul shows up (you do need to actually get to that point, though- dying before that starts the fight over entirely, and the beginning is the longest stretch of the fight with no save). It's just meant to seem hard (which it does a pretty good job of, to be fair).