Thruster Pack: gives you a speed boost while you're running. Thrusters also allow you to go side-to-side. Ground Pound: allows you to slam down on enemies from the air. Clamber: gives you the ability to mount up on edges you would otherwise slip off. Slide: once you reach terminal velocity of a sprint, you can go into a crouch and slide. Let's you avoid shots or close the gap quickly for a shotgun kill. Charge: hit melee button and bash anyone while running. Sprint: you can sprint as long as you want, but while sprinting, shields will not recharge. Everyone can sprint and charge into someone at full speed, which will pop their shields (if hit from the front or sides). Smart Scope: every weapon now has a zoom-in view. But you can also be 'de-scoped' out of it by the enemy. My Favorite is Ground Pound My latest montage video featuring Halo 5 new spartan ability Ground Pound [url]https://youtu.be/kVg-nEjxdcs[/url] EDIT: I understand the Ground Pound is not the most useful, effective or reliable ability but that was not the question. Ground Pound is just my favorite and for me the most satisfying when using. EDIT2: Forgot to mention the smart-link stabilizers that help aim in mid air