Unearthed: The Trail of Ibn Battuta - Episode 1

Make your way down the corridor defeating the half dozen or so enemies. Once it says you've reached a checkpoint you will go into a 1 on 1 fist fight with a guard. Use the shoulder buttons ( ) to kick and punch. Once you've filled the meter on the right of the screen you'll see it flash up telling you to press . Press it when they attack and you'll perform a takedown which does extra damage.

Carry on down the corridor into an office and the chapter will end.