Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
BUTCH BILL	Defeat the boss.	100
CHAIN EXPLOSION	Blow up several barrels of TNT in a row.	80
EXPLODED	Blow up an enemy.	80
FIRST BLOOD	Shoot your first enemy.	40
NEW SHERIFF	Complete all stages.	100
SHOOTING STRATEGY	Shoot an enemy while he is reloading.	80
SMASHED	Smash an enemy with a box.	80
THERE GOES BOMB	Blow up more than one enemy with just one dynamite.	80
THREE BULLETS	Collect three bullets in the same stage.	80
TRAITOR	Make two enemies shoot each other.	80
WELCOME TO WESTERN	Enter the first level of the game.	40
WHAT DID I DO?	Make an enemy shoot a barrel of TNT.	80
YOU ARE BIG, BUT YOU ARE NOT TWO	Shoot down the shotgun enemy.	80