I solo'd all the way to 34 basically. It was especially Brutal 32-34.
Then, I joined a party with 3 friends, and we did around 10 leves, using Leve-Link where possible, and got 34K in 3 hours (more than half the way from 34-35).
It's not beneficial to level solo. SE said so themselves before the game was even launched.
Djigga, please. Highland Hyurs can't jump.