Here is some help for Raze, I can help you on every level on the Human campaign except the Final One. If you need more help ask troopdude, you can find him as one of my friends. Anyway just ask if you need any help.
K, what you do is when you start you will be either on the left or right end of the ship. If you are in the right end make your way to the left end while trying not to die and pick up some sort of weapon. If you are in the left or right end now do this: There is a little place that is underneath where you start in the left end. There will be a shield boost there. Hide there and when people come near... kill them. Than once in a while go outside the ship and pick up some weapons and kill people. Weapons tips; chaingun,rocket launcher, sniper rifle. Hope this helps. =)
If this is on Human Campaign; On the extreme left and right of the level are two houses. Get there and grab some sort of weapon. Does not really matter which. Hide there and let Simmons and his team do the work. And whatever you do, DO NOT let that house fall into enemy hands. In the words of Obi Wan kenobi.
This weapon is your life.
Anyway, yeah just let simmons and his team do the work. Weapon suggestions. Rocket launcher, railgun,chaingun,sniper rifle, grenade launcher.
