Mission 3 Cliffhanger
Early on you will reach a base. You need to plant C4 at the other end of the base. Use your heartbeat sensor to avoid enemies and reload the checkpoint if you get spotted. It is ok for your CPU teammate to eliminate enemies in your way.
Here is a video guide with English commentary!
Here is a playlist of guides for this game!https://www.youtube.com/playlist?list=PL-HeW6XkKdUK97oYVSMU7...