User blog comment:Wernette11/new unlisted brawl dragons?/@comment-24398536-20170630221540/@comment-24126950-20170708133225

Nice. I started using Sage Fruits after 73% completion, namely 9 Sage Fruits for the 73% "Astrid"-level, 3 Sage Fruits for the 85% "Hiccup"-level, and an additional 5 Sage Fruits during the final level. And only because the rival dragons continually targeted on any one of my dragons, and quickly incapacitated it. After the second round they always managed to defeat at least one of my dragons, and I quickly learned that you cannot win the final wave of any Gauntlet Boss-battle henceforth with less than three dragons. I used a level 14 Stormcutter, Boneknapper, and Dagur's Skrill.

Yes, the final level was rather difficult, since reaching the final stage of it was a feat in itself, at least for me anyway xD. Spikeback's ordinary attack dealt quite some damage, and the two Defender Boneknapper always hit the same dragon. This made it difficult to maintain any dragon alive during the final stage of the final level. I finished the Gauntlet event during the first 2 days, and used between 15 and 20 hearts.