Here is my solution(still can't get less than 67 )
Heroes:Glorfindel Theodred Eowyn
Start hands:Song of king, steward of Gondor , sneak ,sneak,sneak,Gandolf
get any card and use Eowyn's resource to get SoK to Glorfindel.Use Glorfindel and Theodred's 2 resources to get SoG to Glorfindel,now G2 T0 E0.
Send all to quest and Theodred give resource to Eowyn,revealed Grimbeorn.use Eowyn's ability to discard the new card.9:2 and finished stage 1B,carrock became active location and put 4 trolls to the staging area.
Get For gondor! now G5 T1 E2,sneak Gandolf in quest phase to give Louis 4 damages, send all to the quest.Theodred give resource to Glorfinder .revealed Roasted Slowly. T8:W12,get 4 progress tokens on Carrock.
Get UC ,now G9 T1 E3,use Glorfindel's 8 resources to Grimbeorn,use Eowyn's 2 resources to get UC to Glorfindel, sneak Gandolf in quest phase to give Stuart 4 damages ,send all but Grimbeorn and Theodred to quest,revealed Sacked on Eowyn,T8:W11,finished Carrock and get 1 progress on 2B. Engage Louis(6/10) and Grimbeorn defends , Grimbeorn get 1 damage and Threat raise to 34,use UC to ready Glorfindel and G+T+G=8ATK to kill Louis, remove Sacked.
Get any card,now G4 T1 E2,Eowyn and Theodred quest and get 1 resource on Theodred, revealed Roasted Slowly,T6:W5, discard the new card, 3 trolls all engaged,defend with Grimbeorn,use Glorfinder and Theodred's resources to play sneak gandolf and For Gondor! Gandolf give Morris 4 damage, Glorfindel4ATK+Grimbeorn5ATK=8ATK to give Stuart(3DEF,6/10) 6 damages and kill it, UC to ready Glorfindel and attack Morris(2DEF,6/10) with Gandolf5ATK to make 7 damages and kill it .
Get The Galadrim's Greeting ,now G4 T1 E3, play The Galadrim's Greeting and Gandolf to reduce 6 Threats and draw 3 cards and one of them is Strider's Path ,send Glorfindel and Theodred to quest and giveGlorfindel 1 resource,revealed Gladden Fields and use Glorfindel's resource to play Strider's Path and make Gladden Fields become active location, T0:W4,and finished Gladden Fields(3VP),Grimboern defend Rupert and UC ready Glorfindel, Then Glorfindel+Gandolf+Eowyn+Grimboern=3+4+1+4=12ATK to kill Rupert(2DEF 10/10)
So the final score=4*10+30-3=67