Pal-Less Palace II

[LalaRu]

Yep, the achievement triggers only if after you reached 100, you continue and die on any floor 101+ of same saved session.

I think too, the achievement must trigger when you completed floor 100. As it works now, it is not coherent.

Edit: if you die in the while (1+ KO) the achievement doesn't trigger at all. I think the correct text must say "Clear the 1st through the 101th floors of the Palace of the Dead solo.", or being fixed to what the dev really intended for it.