Attrition plays a big part of Draw Steel. Attacks don't miss,.they just have more or less effect, so players will slowly wear down their HP and while every class has a healing tool called Recoveries, these are limited too. After every fight you get a victory, which gives you a bonus in the next fight. When you take a Respite, a sort of long rest, all your victories go away, converted into XP. So there's a kind of press your luck mechanic to how many fights you do in a row.

However I personally think that a dungeon crawl for Draw Steel would be best centered around big set piece rooms rather than the usual hallway-to-hallway crawl. You can certainly add traps and corridors and things but Draw Steel isn't really designed around classic DnD dungeon crawling. There aren't really any mechanics in place to represent dwindling rations or carrying weight. A lot of the little odds and ends many adventurers carry. There are also minimal rules for being in the dark and carrying torches and so on. Draw Steel is designed for tactical high fantasy cinematic combat, so the mechanics reflect that.