Click on the game beauty to play zombie story mode. What about the second mode?

The second level is the same as the first level, but don't be bitten by zombies. If you bite people nine minutes ago, you will kill yourself. Start locking all the doors, or you know, turn on the gas, just like the above process, open the leftmost door on the second floor, and then go to the 1 building to defend until the gas in the kitchen turns yellow and explodes, and then throw sparks.

Don't go in there yourself. Then send all the snipers on the wall on the second floor to the far left on the second floor, lock the door and start defense. At this time, you go to 9 with a sprayer

10 Minute Blue Zombie is coming, kill him, put down the gun, change snipers immediately, kill them and get the gun. Close the door and lock it. Zombies will come in droves and kill them with one shot. After that, they will use the gun they just picked up, and the gun will hit the head, saving some use. Finally, don't die without bullets.