Regarding hulk challenge:
To test out how doable it is, I created a debug char, 8/8/8/8, 1 trait (hooves to cancel out no footwear) and cheated a no temperature debug mutation on him (I could just pick a warm spring day, but it's less tedious that way).
I made him drop all the equipment he started with, then gave him lots of meth, adderal and tramadol, took 2 first till he got all the speed bonus he could get and spawned a hulk.
After 10 minutes of shrub dancing, the hulk was dead, while debugdude gained almost 4 levels of melee and unarmed (skills sit at 3(94%) and 3(93%) respectively).
Hooves did a lot of damage, but it would be still doable if they were there only to cancel speed penalty.
No need for brawling - regular unarmed crits stun well enough and relying on stun is very risky anyway because you can't tell how long will it last.
Hulk's armor protected him from non-crit punches, meaning skills and dexterity matter a lot.
Getting pain above 10 is pretty much the end of the challenge, as is allowing meth to run out in a bad moment.
Shrubs OP, nerf shrubs. Wouldn't be doable without movement-impairing stuff.
tl;dr 8/8/8/8 average joe except with hooves gets high on meth and stomps a hulk to death