User blog comment:Kingboo3000/Hector's Hard Mode/@comment-2058992-20100903005922

Hi Anonymous user #48755590. ... ... ... Wow, no promoted units at Chapter 23? Uhhh, wow. You are either the worst, or the best fire emblem player in the history of mankind. Seriously? How?!???

And to answer your question, as my review states, chapter 23x is one of the hardest levels in the game. I managed to beat it, albeit with a number of promoted units and two over-powered magic users. I would attempt if you have at least 4 or 5 units with high-ish resistance and/or dodging power. Worst case scenario, you could always use the mine glitch to get you past it and level up your units on some on the enemy promoted units.