From is his site:
COUNTERSTRIKE FOREVER
Every year I aim to do at least one project for personal development and this year getting to know my way around Unreal was on the menu. I started out with a nice snowy landscape but it somehow? turned into a reminiscent movie about the good old Counterstrike level-design days. Gogogo!
PROJECT DETAILS
100% made by 3D-Mike
https://player.vimeo.com/video/496983929