More like a Redux, than a full blown sequel. Gearbox falls just short of another gem.
The game looks almost identical to the original, some of the lighting changes the looks just the littlest bit. Other than that, some of the textures still looks muddy, the character models still look good (and the same). And the special effects are still pretty to look at. Really there is almost no difference, and most, unless they know what they are looking for, will not be able to tell the difference.
The game's sound, like it's predessor are the same. They did add a few new weapons, which means new sounds, but unfortunely more of the same.
What BIA: Earned in Blood does do right, is bumping up the AI in the game. While in the previous game, if you layed suppression fire down on the enemy, they would stay put. While in the new installment they will on many occasions come around the side and try and flank you. This makes it extremely difficult to gain the upper hand, but definely adds a new challenge for series vetrans. While the game might not be worth the $49.99, it is still a quality addition to the series, if not just more of the same.