This is desert thunder and zombie based (mix) proof of zombie:
based on my inferring skills and the info on the wiki and nexon themselves. let me shed some light and i might even have this right. Ok well it takes place in an underground mine place. The map could be a collab map seeming as everyone saw that it has zombies and desert thunder people. Probably based on the map layout it goes that you face a group of zombies, kill them, then go on to the next level of the mine. The next lvl probably has desert thunder people probably like a test or "collab". and each lvl the amount of people probably grows. Maybe even having to press a button in that little shack at 0:06 to stop the spawns and get to the next level. Am i missing any info? press thanks if u liked my analysis.