It may be out of context but can juggernaut get stuck and not react to it.
Please nerf grandmaster he’s way too hard plus way too unit and time consuming. Please nerf his health and give less time between each challenge and give us more time to complete each challenge please, this is too hard.
I believe the Grandmaster does not need a nerf at all...
I am not ready to face the Grandmaster just yet, but I will R4 my 5* Juggernaut, and then I'll be set.