Mirio would be a great assasin

First he needs a stealth suit, made the same way as his regular costume. Then he needs a weapon that can phase with him(or just use what he finds).

And thats pretty much it. He would have to stalk his targets to find when they are vulnerable and relaxed then just phase thru the floor and stab em.

Bro would make bank. And you couldnt really stop him. Even if you had the target guarded 0 - 24 he can still just blitz and runaway.

It only doesnt work if the target has high durability, but hey dont take those jobs.