Skill is there, 375 hit combo is very good i dont care what point in the game you are in. Really just need poison immune for scarlet witch and gully/void for wolvie you should be okay
The vision fight is gonna suck really bad using a 4/40 NC. When I completed it, I used a 4/40 Sig 20 x23, each fight was like 440 hits but vision was 1100. That's with her getting cruelty and using l2 for damage. NC will lose a lot of damage from his deep wound not proccing.
Apart from wolvy and SW which need certain champs to fight them the rest are easy.
WS is the worst because he has the only SP that can't be evaded fully with any champ (well, I can't evade the SP2 but it might be possible) and the block damage sucks if you don't bait SP1 all the time.
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For wolvie, it's between a 4* 4/40 Guilly or a 3* maxed Void.
I don't have void so I'd go with guilly but be prepared to force quit if you don't nail the SP2 with the right timing.
A 300+ combo as a test is pretty stout in anyone's language, I say go for it.
WS is the worst because he has the only SP that can't be evaded fully with any champ (well, I can't evade the SP2 but it might be possible) and the block damage sucks if you don't bait SP1 all the time.