This is very important for survival, you always need to be a pair, it's impossible to survive alone especially on crazy level.
This is very important especially after :
1. Bring down the popsicle where you need to kill regular yeti and disco. New players tend to be excited and go by himself and dies in the process.
2. After finishing the attacking the Yeti King and need to go to your position again.
There will be a new set of zombies spawn. You need to stay together to clear the path to back to your position.
Note:
Watch out for the log in the middle of the alley. In my video, the sunflower team got split accidentally. One decided the take the middle side, and other being forced to left, the impact is almost catastrophic. Both dies in the process and that happen during popsicle time, luckly we were able to recover!