It also helps a Cappy to keep an eye on the stats and weapons that give them the most damage for their level. Keep upgrading weapon to higher DPS. Keep upgrading Might bonuses on items as well.
Duoing with any other class, even another cappy, speeds things up for both of you. Cappy can tank + heal for a duo in all the solo content with ease. (Two faces roll much faster than one.)
Cener, Ingo, Rilibald, Hesred, Halras, Loringo
Arkenstone (ex-Elendilmir) - The Osgiliath Guard