Well, what DO you want to do? There are always ways to trim down a high power concept, so it will fit a lower power level. Just give us something to work with.
Well one idea is a WWII soldier who was put on a special mission to close a gate to Hell from the
other side, meaning choosing to be sealed in Hell. However he finally escapes. Power-wise, just Inhuman Toughness/Recovery. But that leaves only 2 Refresh,
before mortal stunts. And 20 skill level doesn't really reflect "badass soldier
before being trapped in hell" either.
Another was a sort of Debt Collector/Enforcer - a mortal with a knife that's bound to him, part of him - so it's summonable, etc. I even thought perhaps tucking Focused Practitioner (force) as sort of a way to 'cut' things at range, but perhaps FP is a bit extreme for what's a limited focus; I just want to expand on the metaphysical nature of what a knife can do thematically.
Another concept would be a changeling information broker. But again at 20 skill level, that's not very Good. That's the information equivalent of a pickpocket, not a cat-burglar.
I guess my problem is that I want to play something very Supernatural and very Good at what they do. Feet in the Water feels like supernatural pre-teens. Which is the point, I know. I just want to play a badass dealing with big problems, instead of
feeling like I have training wheels on.
Part of the issue is I don't have my books with me and am going off memory for costs. I do know I want to avoid Magic (I want to avoid that level of mechanical hijinx my first game).