Neoseeker

Offers cheats, FAQs, screenshots, reviews, and a discussion board.
http://www.neoseeker.com/Games/Products/PS2/xsquad/xsquad_cheats.html

All-Reviews

Reviewed by Tom Allen, 2.5/4. "This game gets irritating quickly. I got sick of peeking around corners and waiting for the right time to attack."
http://www.all-reviews.com/videogames/x-squad.htm

GameSpot

Contains review, previews, screen shots, news, movies, cheats and hints.
http://www.gamespot.com/ps2/action/xsquad/