DOS is worst DS metroidvania.
Luck is literally broken- you actually have to patch it externally- something I learned using nothing but the golden sword, 777 armour and another item and choice souls the entire fuking game because that's what I do to grind in metroidvanias- I beat the fucking thing much longer than I would've otherwise.
There's an actual broken cutscene which you can trigger if you take the clocktower to it first, and in addition to this, a chunk of enemy placement is poorly done in many areas- especially certain locations such as the undersea part which lacked items, and anything of remote challenge.
This greatly fucked over soul drop rates and had me wasting hours trying to get the fucking eye soul I shoul've gotten ages ago- but the worst offender is that the best place to grind are the higher yeballs right before the Castle Keep using this one soul I can't recall now.
Seriously, DOS needs a massive fix hack like Aria of Sorrow got- and the one to remove those infernal hated seals.