Hulk’s aren’t too bad. Once, I started a character with only 3 melee and a wrench, no other skills for fighting and no fighting style. Encountered a hulk, and I won on a one-on-one fight with it. Put it through a burning bush, and whacked it to death with a wrench.
A group of them can be tricky, but I reckon a character with decent skills and armor can take them. All that matters is preparing for it. Getting yourself surrounded by them would be a bad idea, since you might end up getting pinballed to death by their smash attack. On the other hand, if they’re in one general direction, and there’s a lot of open space where you’d be smashed, you won’t be damaged that much and you get a lot of space in between them. Maybe a few explosives to thin out the rushing hulks could work, but with decent skills in melee and dodge, killing them off won’t be too hard.
Early game encounters would be tricky, but I suppose if you really prepare for it. For example, setting up a house to meet to hulk horde; placing a rag here, there, and everywhere, and a lighter on the right spot at the right time. Basically, if you know where all the hulks will show up, and planning out your attack, it won’t be impossible to come out with a win.