Hello everybody, i will ask this question in both this and the celeste subreddit, in your opinion what is harder to 100% (achivements)

So me and my friend had a debate, which is harder to 100%?

Celeste (no assist mode)

Or

Hollow knight (no mods to make the game easier)

I'll ask this in both subreddits to make sure, thank you a lot for responding :D