Do the following tasks to unlock the following achievements and their alloted gamerscore.

Small Arms unlockable Characters:

To unlock Volcanoe play it in mission mode as any character.

To play in Shooting Range mode, play it in mission mode with any character.

To unlock all Costumes for all characters, beat mission mode with any character.

To download content, just goto the games section, click on xbox live arcade, then go to download games, find Small Arms, and download content thats in there that you want.

In Moonbase, at the top of the map you should see two piles of rocks on the left and right, then get a sniper and go to the rocks and crouch. (This is very useful online).

In Waterfalls go to the end of the map where all the food appears and their should be a hole, jump in the hole move to the left, and you should see a rock under the broken branch then press A then Y and then you should be under the broken tree. (This is very useful for mission mode, because then the AI bots will start shooting each other..... usually).

In the level Bazaar, on the left their is a building, get on the building, and then jump off and move to the right against the wall, then press A then Y and you should grab on to a little edge hanging out. (This is very useful for mission mode, the AI Bots start shooting each other....usually).

In Waterfalls, go to the end of the map where all the food appears, then go to your right and you should bump into the waterfall, then press A against the waterfall and your guy should grab on, keep pressing A and until you get to the top of the waterfall. (This is very useful online, because there is a tree blocking you when you get to the top).

In Outhouse there should be a bridge in the middle of the map, then go to the bridge where you should see a little hole, then jump in the hole move to the right and press, A then Y, and you should be on a branch under the bridge. (This is useful for Mission Mode, because the AI bots will start jumping off the cliff trying to kill you).

In Outhouse, all the way at the end of the map their should be a tree, then jump over that tree and off the cliff, then move to the right and press Y against the tree, and you should grab the little grass thing hangin out. (This is useful for Mission Mode because the AI Bots will start shooting each other).

In Tornadoe, go through the whole level without killing each other, then at the end where the camera stops moving jump off the cliff to the left and you should land on something and be hard for people to shoot you.

In Train, at the beggining or at the end of the map (the caboose part) jump off the left of the caboose, and move to the right and press A then Y and you should land on the edge of the caboose. (This is useful in mission mode, because the AI bots will kill their selves trying to kill you by jumping off).

In the level Sewer their should be two floating platforms and two lights above them, then tell your friend to go in the hole in the middle of the map and hit the two lights as fast as you can, and then the door should close, then green poison will come out and kill your friend. (It's pretty funny because my friend got mad).

Do not kill your enemy in Train just keep going with the camera and there should be secret places deep inside the map. (Which is pretty cool).

In Tornadoe, do not kill your friend, just keep going with the camera and there should be secret places deep inside the map. (Which is pretty cool).