CDmag.com
Playing guide, including advice on weapons and dealing with specific situations.
Cheatbook
Instructions on activating cheatmode and how to use it.
Gamers University
[A-] Reviewed by Samit Choudhuri. "The game's core charm remains, with 19 weapons you can choose from to destroy almost any object in the graphically rich environment."
Gamespot
[8.9/10] Reviewed by Joe Hutsko. "Everything that was good about the first game is great in the second." [PC edition]