You have repelled the half-orcs and ruffians in the Gladden Fields, but it is your discovery of Sharkey's true identity that will be of greatest interest to Radagast.
'I owe you my life, ${PLAYER}.
'I'll make for Blómgard with the goods that Sharkey - er, Garmog - and his demons stole and see if they don't belong to any of my kinsfolk there. I suppose I'll have to build a new waggon, but I can look after myself now.'
Tautila turns to leave, but quickly turns back.
'Don't you worry about me. You should get back to Hultvís and tell Radagast all about Sharkey!'
Radagast can be found in Hultvís.
You have discovered Sharkey's identity and made safe the Gladden Fields. You should return to Radagast in Hultvís.