I used blue eyes ultimate dragon and destroyed his monsters until he had none left, made the ATK of the fusion monster stronger with blustering wind and yusei’s tie that binds skill and made a direct attack of at least 7000 damage . With trap and glossy cards inbetween & destroying more than 10 monsters and a comeback I had more than 5000 assessment. Depends how strong his deck is too.
Not to mention that having to get that assessment against an NPC that isn’t even guaranteed to appear upon using duel orbs is needlessly frustrating. Luna’s unlock mission was annoying yes, but at least I didn’t have to do anything against a specific NPC. And Luna’s character missions are the easiest in the 5Ds world. Crow? He’s a pain to unlock his character missions and complete them.
I can't unlock Luna, I've won 100 duels using Leo, and it didn't trigger the event
Try winning some more duels, maybe you miscounted. I took a note and still miscounted, apparently I forgot to update my note at one point, resulting in Luna appearing faster than I thought it would be.
Also, remember that the 3x multiplier does not multiply wins, it only multiply rewards.
Crow is super easy to unlock. If you don’t have access to yubel or Ra you can simply make a beater deck with spikeshield. Tribute set a summoned skull or something else with a decent attack and defense then let them attack and activate all 3 spike shields and boom easy over 9999 damage plus the rest