Yeah, I'm disappointed that the difficulty doesn't scale. The game is fun, but at the same time I'm not thrilled. I feel like they should reverse the way combat works. As of now, you get one-shotted constantly and it takes many shots to take most of them down. I'd rather take less damage, and be mowing them down; make overwhelming numbers the difficulty, not being one-shotted.
Well, no, maybe not even that. I feel like it's missing some kind of strategic element.
you are doing it wrong if you get one shotted that much, with health upgrades/heals/overheals only crit rockets which are slow one shot you at all...and an uber canteen solves that anyways. damage isn't that high always either, they clearly nerfed the huntsman arrows so you don't get one shotted, the snipers don't ever aim for your head either, you get a warning as long as you have more than half health by the first shot
it doesn't scale because if it did, people would stay servers partially filled and kick people to be alone, causing the queue to build up from all the server hogging.
survival is just a matter of strategy and technique, throw milk and shoot like mad while wading through money as the scout and you are almost invulnerable, as money over heals you. dump upgrades into milk charge rate and it respawns as fast as it wears off even.
the only class sort of vulnerable while wading into the hoard for kills and money is the pyro, but uber canteen solves that.