this is coming from someone with a lot of experience in this method of boosting

0% risk of a ban also this method will show you how to maximize ur points value and exp

TUT: Start up Campaign-Arcade-private-chapter2-act2

Choose mutators such that are Hard more % equals more points

then choose insane and begin Note To get maximum points takes skill trust me

if you die you lose ur points multiplier (Dont die take ur time if you need to!)

now just go through the level without dying some important things are to remain in cover get ammo from ur teammates and active reload

at the end of the level you need to try and keep 1 or 2 locust and run past them to the gate

From the gate throw nades or just shoot them then the checkpoint will come make sure you are in front of the gate then go through finish the level and when the cutscene begins press start and revert to last checkpoint Repeat

You can make it easier for u by putting easy mutators on and even going on hardcore mode
Hope this helps people its not the best tut but post here if u have any questions about this i will perfect this post soon because i will not boost much longer in gears 3 Thanks to all who have ever been in my lobby its been fun