[quote=Nosuchthing]
Question... Given that Silas only possesses the power of imprinting (according to Stephen's index). How exactly does he nearly kick a man through a concrete wall ten feet away?
[/quote]
Silas was imprinted onto his shoes at the time. He landed a ~50 foot drop by having his shoes absorb most of the force of impact, kicked the man into the wall by amplifying the force of his kick and absorbing the recoil, and jumped out of the exploding building by similarly amplifying the force applied by his legs. 

By comparison, all he did with the coin was swap places with it and then pull it towards him, which are both relatively untaxing on the imprinted object.

I wanted Silas to showcase his power on mundane objects at first because I can see him mostly using boring old weapons in most fights.