A few points (some will be controversial)
1) Limit the number of people on your team. I went in with just 2 people for the Heroic and Legendary. This, IMHO, is key. Otherwise, it requires to much luck to realistically beat. My choice to beat was Seoni and Lem. I have Lem's Bardic Performance Maxed out, and those extra pluses are worth it. I think you might be able to do something similar with Lini, on solo mode with her (and her reveal animal ability). Another option might be Merisel, and have her dodge everything until she finds a spider
2) You will NEED cards that let you look ahead - scrying, augry, etc.... You'll want to try and time their use for maximum ability. Ex - the revelation quill, you should only use when there are 6 or 5 cards at one of the locations. Then you can re-organize. Also, if you have rechargeable cards that let you look ahead (IE spells, or the one treasure card that I don't remember), and you don't get them to start with, consider forfeiting the adventure. And use them in conjunction with each other - if you play the quill, and don't find the henchmen, but find a bunch of monsters/barriers, move em with augry/scry
3) Have cards that you can auto beat with - example Slaying bow/Scythe/Sword.... potion of glibness, crown of charisma, lizard.... All of these auto beat various checks you WILL have to make.
4) (Controversy time) If you don't have the items you want or need for a specific character, create new characters to keep your items for you, then farm the specific items you need. That way, you won't lose any sweet loot.
Hope that helps
(Also, I think you have the wrong number - isn't it 6.3 that is Scaling Mahr Massif?)
Edited by ferrisvalyn, 16 March 2017 - 11:24 AM.