Gamespot released two new gameplays that were recorded at E3 that give us a better look at the Sniper Rifle and the Hardlight shield. I must say the first person view of the Sniper may take some getting used to; very different from past Halo’s.
Sniper Rifle appears at 9:18 in the first video
Hardlight Shield and Developer Commentary
MLG Pros and Developer Commentary on Adrift