"The weapon choices are varied and change slightly with weapon modifications as you progress through the game. As you play through the game, you will encounter technicians that will upgrade one of the weapons in your inventory. You can't choose what upgrade or when it's performed, but as a scripted event, it allows the game to scale its difficulty as you progress through the game along with your weapons. This is so that you don't have to play through the first third of the game with only the shotgun, and have to wait until the later levels to get the nail gun. Of course the game still paces the weapon selection somewhat, but I found the weapon upgrades kept the weapon selections fresh and useful. However, once the last few levels were reached, the weapon selection in my opinion did feel somewhat lacking. Perhaps it was because I didn't find anything that I felt suited my gaming style, however, in some battles it did feel that I was missing one weapon which would have made some of the more challenging firefights, more enjoyable."