[map] Overrun

This is a a discussion topic for the map "Overrun" by Nih which can be found here

Map description:

A small zombie killing map.
Protect otis against hordes of evil zombies who respawn in the air. If Otis dies you lose. If the time runs out you win. Simple yet fun

Tips:
Activate the sentry guns by touching them or shooting them.
Use the radio on the ground to hear music!

Map screenshots: