Bungie > Infinity Ward > Treyarch
(No calculus was used in this expression)
Nice update! As for the advice towards "A monument to all your sins"
-Don't get discouraged if you have to try a section several times.
-Play through on Heroic difficulty first so you can get the feel for a challenging game and learn the basic mechanics.
-As everyone has said before me, the plasma pistol has an overcharge function for a reason. Use it.
-"Insanity is trying the same thing over and over again and expecting different results," Albert Einstein said. If the game is kicking your butt at one strategy, try a different one.
-Plan ahead. If you know you're going to be fighting hunters later, keep the rocket launcher you got in the beginning. That little bit of juggling with your plasma pistol/DMR/Rocket launcher will pay off.
-Explore! If you're low on ammo or thinking "I could really use a <Insert weapon name here>," chances are Bungie's put a present around there somewhere. You just have to find it. Bungie made the game difficult, not impossible.
Good luck! (Because that helps too)