You can get the gist of Infernal's gameplay in the first 20 minutes of the game, and by the 3rd level, you have seen everything you will ever see from the game. You basically move from room to room in a mostly linear fashion, blasting guys and then sucking the souls and ammunition out of them in an excruciatingly long process. Then you go to the next room and do it again.

You might have to go searching for a key card or solve some rather simple puzzles, but the game is pretty much all about the shooting. The bad guys, who are actually good guys (?), change in appearance or become a bit tougher from level to level, but that's about it. Other than the handful of bosses you have to fight, most of your opponents tend to blur together.
You have a varied collection of weapons to take out these interchangeable opponents, ranging from your basic handgun to high powered energy weapons, though none of them are anything to write home about. Your guy's demonic weapon boost looks cool and definitely packs a good punch. However it is a transient feature that eats up a lot of Ryan the Angel's manna, which is a pool of demonic power he builds up whenever he sucks up a dead guy's soul or does something that is really bad.

The story tries to give an interesting dimension to the game, but inevitably crumbles into a collection of long-winded cutscenes and confusing plot points that make no sense. This is no surprise, as something always seems to get lost in translation with these biblically-inspired games. Despite Infernal's best efforts, the combination of ethereal realms and very earthly intrigue is silly and senseless.