Any worship strategy?

[Dying pancake]

I tried my best at 54 waves, 121 wave prayer is great but i doubt i can achieve that. I am upgrading my towers at construction table but that can be ages to make any further difference.

I put two fire ball towers and one freeze tower repetitively, it works fine until its not :( other towers simply not working, or are they? Anyone have any suggestion?

[Olaf 'Don' Scholz]

I saw one guy that actually beat wave 71.... sadly didnt show what level his towers have been