Graphics: 4.5/5 This game looks purely like an Xbox 360 title - you wouldn't even know it was from the arcade. The colors look good, the characters ( for the most part ) look really cool, and most of the maps are nice to look at.
Sound: 4.25/5 Pretty sharp. The guns sound like... guns, and each of the 12 characters talk here and there. The music also fits the game very well. Still, the sound could be better.
Control: 4.5/5 Think of Small Arms as Super Smash Bros. with guns. That's almost exactly what this game is. You use the right analog stick to aim, right and left triggers to shoot, X to melee, and so on. Small Arms controls are probably the best of any game in the XBLA.
Fun: 4.25/5 The core of Small Arms is really fun, but short unless you have Live. The single player plays ( like I said ) exactly like Super Smash Bros., but after awhile that will get stale. There is also a "Challenge Mode" where you fight waves of opponents, and "Shooting Range" where you shoot targets to get a highscore. Small Arms really is fun offline or on Live, and there is even downloadable content - with more to come, I'm sure. For $10, you can't go wrong with picking this game up.
Achievement Difficulty: 4/10
Small Arms really has mostly SIMPLE achievements. Complete training, complete mission mode, win 10 matches, and so on, but some may take awhile. The challenge achievements may take awhile to get unless you get lucky and the AI "glitches", which happens sometimes. The AI will randomly spawn and run off the spawn for no reason - this pretty much hands you achievements. Others are self explanatory - win. Just win a certain number of matches and "Achievement Unlocked". This game doesn't have the hardest achievements, but it has ones that are fun to get.