PMD DX, late game dungeon
I have a slow moving save file on Purity Forest (the most "true roguelike" dungeon of the game) that I'm whittling on, which is now at floor 50 of 99.
And, oof, I had forgotten what it's like to have to take a few turns every minute or two in one of these games because strategy matters.
My current main is Dodrio, which is an incredibly oddball choice, but between Quick Attack, Fury Attack, Giga Impact, and Hyper Beam, they at least don't feel too underpowered.