Knight Squad - Escape the city

The city is being flooded by nightmare-inducing water so stay away from the water. Get to the roof and escape via the helicopter. Get out of the city and stay alive!
-Eliminate creatures to gain money! :coin:
-Buy gear near walls to help you get through the city. :gear: 
-Find the keys on each floor to unlock the next floor. :key: 
Note: This creative was inspired by COD Zombies.