Halo was "how do we one-to-one port a freelook action FPS to thumbsticks? I know! Let's kneecap the player's movement! We also want this more "cinematic." People really like Half-Life, so let's take all the wrong lessons from it!"
It was a medicore game (and an absolute shadow of what it was going to be before Microsoft bought Bungie). That would be okay if it wasn't such a hit and brought in way too much new blood who didn't know any better games. It set the stage for FPS games since and we still haven't recovered.
Anyways, now on to this Rushia looking fairy.