150 hit-combo (Grade farming method)

[Angulus]

I'm trying to earn the 150 hit-combo trophy with the Grade farming method. I use Tidal Wave with Rita in OL but I can't do great combos. The max I reached was 30. I'm doing the same I watch in videos with the same skills and the risky ring but my Rita doesn't cast spells so fast. And after 2 o 3 Tidal Waves she stop for a brief. What the hell I have to do?! 

 

Edit: I reached 300 combo with Yuri tension skills, so no problem (I still would like to know why I fail with Rita chains but its ok)

Edited June 18, 2023 by Angulus