Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Afghan Camp (40 points)	2 stars on Afghan Camp.
Become War to survive a War (40 points)	20 kill per minute ratio on any level.
Cave Encounter (40 points)	2 stars on Cave Encounter.
Deep Jungle (30 points)	2 stars on Deep Jungle.
Escape from Interrogation (30 points)	2 stars on Escape from Interrogation.
Final Battle (40 points)	2 stars on The Final Battle.
First Blood Complete (50 points)	3 stars on all CHAPTER 1 Levels.
First Blood Part II Complete (50 points)	3 stars on all CHAPTER 2 Levels.
Forrest Hunt (20 points)	2 stars on Forrest Hunt.
God didn (50 points)	Reach Rank 20.
God would have mercy (50 points)	Reload Combo of 100 on any level.
Good supply of body bags (50 points)	2000 headshots in total.
Hope Demolition (20 points)	2 stars on Hope Demolition.
I'm the last one, Sir (50 points)	3000 kills in total.
Jail Escape (20 points)	2 stars on Jail Escape.
My War is Over (50 points)	Complete story mode on Green Beret difficulty.
P.O.W. Evacuation (30 points)	2 stars on P.O.W. Evacuation.
POW Camp (30 points)	2 stars on POW Camp.
Prologue (20 points)	2 stars on Prologue.
Rambo III Complete (50 points)	3 stars on all CHAPTER 3 Levels.
River Run (30 points)	2 stars on River Run.
The Fort (40 points)	2 stars on The Fort.
The Fort 2nd attempt (40 points)	2 stars on The Fort 2nd attempt.
The Waterfall (30 points)	2 stars on The Waterfall.
Village Encounter (30 points)	2 stars on Village Encounter.
War you won't believe (40 points)	15x Score Multiplier on any level.
Your worst nightmare (30 points)	10 chain kill combo on any level.