You don't need Ascension, just to have unlocked Ascension. With that said, I swear it's easier to beat the heart on A1 than A0 because of all the elite rewards.

You don't need Ascension, just to have unlocked Ascension. With that said, I swear it's easier to beat the heart on A1 than A0 because of all the elite rewards. The heart itself, well it's definitely challenging, but it only works for very specific builds. I went to some effort to beat it once on each character and basically have no intention of doing so again.