Xeus Military Academy

A few minutes ago, as the video replayed in the viewing gallery -

'STEP!  STEP!'

The moment Crey pinpointed the location of the enemy, he decided to move. He silently melted into shadows but the difference between the two was that the other man was deliberately stepping loudly knowing that he couldn't hide his tracks in this silent and dark place.

One thing he did better was that he didn't pull out his glowing plasma sword. That neon light would be a big painted sign upon his head in this dark place which was akin to suicide, if and only if you are not confident of your skills. 

Therefore, he was thinking of the kicking-up confrontation directly first.

On the other hand, Crey was proficient in stealth. In the darkness, he abruptly looked up, and then using the closed bend's wall support, he climbed up on it.