3. Weapons
Collecting weapons for the sheer love of loot is one thing, but it just so happens that firing the weapons in Borderlands also happens to be pretty awesome. With the right combination of skills and weaponry, your player can unleash a level bullet carnage you're unlikely to see in any other shooter on the market; you're taking down more enemies than you're able to loot and every push of the trigger is equally as satisfying as the one that came before it.