Around 10:30 combat after the most recent mortar nerfs
Round 1: Upgrade
Round 2: Put 4 heroes in with desired weapons and/or shield if desired with guardian pets equipped. One huntress guardian per stack speeds up waves by around 30s.
Hint 1 auras on top of the statue + tower stack on the top platform next to the crystal for better LoS
Hint 3 stack on the rock that's touching the tree
Black lines are Line of Sight for the two mortars facing in that direction. They should be able to see both the pumpkin spawn and the wyvern lane.