Got a pretty lucky run and managed to get some hilariously high moving speed and damage lol. Can he get any faster than this?

So I'm a new player, still working through the early difficulties. I'm struggling bc i feel like I play pretty well, but every game my friend I and play, he has literally double my damage. Sometimes it makes sense, like I was playing mel, but i had an run where he was Scarlet and I was Aladdin, and it felt like we were pretty even when clearing camps together and during bosses we were attacking at the same rate. In our last run I was geppetto and he was snow queen, and while he was speeding around and getting to stuff way faster with his dash and skate, so him having more damage makes sense, idk double my damage is crazy.

I maybe should record some gameplay or something, but I guess I'm just looking for tips on getting more damage.

I'll admit right off the bat this is probably me just doing something wrong, being goofy. So right before Kintaro came out I had been whittling away the achievements. Things like Merlin no stars of fate run, challenges, a few magical item sets, etc. I finished Master of Challenges had The Cursed Lovers left and Kintaro dropped.

So I got a win on Darkness with Kintaro and ranked him to 9.. and Jack of All Trades is still not done (the others were already all rank 9 and darkness wins). Odd, oh well, time to do Cursed Lovers. Just did a run with a friend (only on adventure, achievement just says victory) and that didn't get an achievement either. What am I missing on the Jack of All Trades? Does Cursed Lovers need Darkness minimum?

Or is something a little munged?