My most brutal (and frustrating) loss is a recent one. It was a trample and spreading fury rulesets match, I am too focused on dealing damage in the frontline with melee and ranged attack. In the end, I lost because my Frost Giant can't hit my enemies Phantom of the Abyss at all!
Sharing with you my recent write-up about it and the corresponding match replay, in case you are interested!
Blog post: https://peakd.com/hive-140217/@mozzie5/share-my-battle-frost-giant-cant-hit
Match replay: https://splinterlands.com/?p=battle&id=sl_253f5634a75e8bb833c95b9aab5c01a5&ref=mozzie5
ign: @mozzie5