I got tired of people telling me that a perfect recreation of Master Chief in Halo Reach needed Grenadier knee pads, so I saved up some credits and bought them after I got the Commando helmet (which I needed to recreate one of the characters in my upcoming RvB fanfiction)
Noble Six was KIA after being overwhelmed by Covenant forces on Reach, then again I expected something like that would happen since he was a Spartan III (which were made to be cheap disposable heroes because Spartan IIs like the Chief here were expensive and took long to produce, and there just weren't enough to turn the tide of the war).
Jorge sacrificed himself to destroy a ship, Carter sacrificed himself to destroy a Scarab, Kat was killed by a sniper, Emile was killed by some Elites, and I don't even know what happened to Jun.
But because of their sacrifices Master Chief makes it to Halo and blows up the whole Covenant Armada.
I'd love to see the Chief in action with a combat knife, after all he could kill an entire battalion of Elites using only his wit and a ballpoint pen.