I have been stuck on lv 70. Tried multiple ways to win. Easy on first map 200 waves. How do I get past this? Love the challenge. Edit, why am I showing lv 2? My character is lv7.

Welcome! There are some guides on the mazebert discord. Also, the forum currently always shows the standard rank, not the season rank, that's why it shows level 2: Your profile in Standard Your profile in Season

I adjusted the rank/level display on forum posts. When there's an active season and your season rank is better than your rank on standard, it will show the season level and rank instead.