This was a pretty meticulous guide. Needless to say, I will not do another skirmish of this. It's too hard!! At least I can finally do the Lancer trial now...
Thank you for uploading these! So many "guides" are like: "Just have max troops, endgame random drop loot, and have this character's ult proc every turn."
It's been 11 months and maybe you already found answer. Or maybe not. Ace from scout challenge drops it. And I advise replaying it several times because this challenge is not hard to clear with "A" rank, even in early game (only dealing with ace can be troublesome). And it reward with a lot of XP, money and good weapon for scouts or engineers
@@makidiaz3894 yup the RNG is making this game stupidly unfair (sometimes you trigger the characther ulti when you didn't need it, sometimes a characther can stupidly miss a point blank shot)