I played all Borderlands game and I must say I truly enjoyed them all. All you do in this sort of games is shoot everything, loot everything (hoping to find better gear in a nearby chest) and of course, try to bring down the last villain. In this game nothing is different, except by the fact that at certain random moments you just got to go to clear chambers of enemies (this is all even in side quests). After a while, everything becomes a bit of a bore. But this often happens when playing this sort of games.
This game is for all Borderlands fans out there.