Last time about 36 nav levels. Today I had a problem with the app which is why I had to repair ressources. At the same time I changed (after two runs) to Mod 1 and did about 20 runs now. Figured out that max damage is actually faster then 90 seconds which is why I stick with this version until the end of this tm. For the next tms I will evaluate a reasonable time of clearing the quests and probably use 1 wave again, but with a bit shorter wait.is this working for you? how many nav level did you do already like that?