Stuck at 98 percent

[Binary]

So, what am I missing?
https://imgur.com/a/CUq1Zlw
Yes, I've done all the curses.

[seblav]

What about the challenge chest? Some only gives upgrade point, maybe you missed one.

[YinYin]

Did you buy all item markers?

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Publicado originalmente por seblav:

What about the challenge chest? Some only gives upgrade point, maybe you missed one.

I've finished every one the moment I found it, I don't think there are any hidden ones.

Publicado originalmente por YinYin:

Did you buy all item markers?

That helped, apparently I've skipped a few hidden upgrade points. Thank you.
I don't use markers in metroidvanias, so I haven't touched any markers in this game, but apparently I should start doing that.