There are 3 paths on the map that eventually merge into 1 path.
If You Summon Zombie Titan Tv guy Boss you have 80% chance to get Zombie Tooth
You can get eyeballs with 100% from every boss, Boss spawns every 10 Waves. Zombie Brains drop from every boss with 80% chance. Zombie Keys drop also from every boss but with 50% chance. There is small chance to get Haunted branch after finishing match. Blood Bag dropping from wave 10 , 50 , 90 , 130 Wave Boss. Cannon dropping from wave 20 , 60 , 100 , 140 Boss, Charged Screw dropping from wave 40 , 80 , 120 , 160 Boss.
To summon secret boss you need use 3 levers on map after that the secret boss will spawn, but much stronger then normal
Lever 1
Lever 2
Lever 3
This pumpkins was made for defend path to your base. They have small amount of HP but after it get destroyed it stun toilets in small range. Also if you protect first pumpkin, you can get better buff in trinkets