A Witcher in GURPS

[Morty]

As I've been playing through Witcher 2, I remembered something I didn't manage to bring up in a "I'll build your character in GURPS" thread before it, sadly, died. Namely, if you were to run a campaign in Witcherverse using GURPS - a system I feel is well suited to it - how would you describe the iconic monster-hunting mutants? Obviously it'd be a template, but what advantages and disadvantages would it incur? Discuss.

[Tengu_temp]

Disadvantage: you're the author avatar of a middle-aged, balding writer. You shiver in dread whenever you realize it.

Roland from Dark Tower has the same disadvantage.

[Jeivar]

I don't remember the GURPS system with perfect clarity but:

Combat Reflexes.
Night Vision.
Slow Aging.
Sterility.
Immunity to Poison and Disease.
Social Stigma.
Other stuff.

And some way to approximate the Signs.

[Tengu_temp]

Witchers aren't immune to poison, just disease and bad effects of their potions (which would make a normal human at least feel really sick). They have overall greater resistance and heal faster than normal humans, though.