Playing as a hybrid between an RPG and a First Person Shooter Borderlands, much like the Left 4 Dead games, only really comes to life when played on XBox Live with Friends.
If you've ever play an MMORPG such as World of Warcraft you will be familiar with the games structure. Missions are given out by computer controlled characters, once completed you return to that character to receive experience with which to level up your character as you see fit (improve the power of your weapons, increase the amount of life you have etc) and sometimes receive an extra reward. Unlike any MMORPG however the first person shooter element means that there is actually some level of skill to the combat, although you will not be able to defeat certain enemies until you reach the required level. In this respect the game is very helpful as it will always suggest a recommended level for each mission.
The game allows you to choose from four different classes, each with their own special abilities, as well as featuring a huge range of weapons with which to survive the wastelands. Your ability with each weapon type increases as you use them allowing each you to customise your character as you wish. The only criticism that can be levelled at the game is the lack of variety as the game progresses. Running in excess of twenty hours my interest did begin to wane before the final few missions.
If you are looking for a single-player FPS there are far better alternatives available, if on the other hand you are looking for a multiplayer experience with a far amount of depth then for under twenty quid Borderlands could be the game for you.