Nope, doesn't work like that.
It doesn't make a difference to Steam what achievement system we have in-game.
The only power we have content-side is to send a message to the Steam module to let it know an achievement is complete.
All the Steam achievements are replicated in the Steam module by web systems liaising with Steam admins.
It's therefore unlikely we'd ever add achievements that grow organically and relock as requirements are added, like comp cape or Music Maestro, to Steam.
A game updating weekly that needs that much Steam achievement maintenance would be a real nuisance.
So we carefully picked Steam achievements for the initial release that are static unlocks.
(Mostly - 99 and a Flake will probably be a pain whenever we add a new skill, but at least that doesn't happen very often.)