All of us are dead - K game

Zombies have appeared at our school!
All of student are in danger!
Please save the surviving students.

Become a special force to suppress zombies occupying the school and rescue students.
It's a game to fight zombies by firing guns.
Don't shoot students who run away safely.
No matter what type of zombie appears, don't panic and respond.

--Function--
1. 10 types of Guns with various functions.
As you go up against zombies, you get a certain amount of dollars.
You can use dollars to unlock and use guns with various functions.
Respond strategically to zombies by changing 10 types of guns with functions such as increasing dollar acquisition, increasing maximum life, or discounting floor moving prices as needed!!
If you clear a specific floor, you can also get a new gun for free.

2. Surprise appearance! Boss zombie.
When you catch ordinary zombies and rescue students, a boss zombie appears on a specific floor or higher!!
Boss zombies are as strong as they are, so they don't die easily.
When a boss zombie appears, you have to fire a gun quickly, and damage the boss to the point where he can't stand up.

Can you be a hero who defeats zombies and saves students?
Challenge a higher class by raising your judgment and quickness to the highest level!