Any particular reason? I didn't have a chance to finish it, but I played for a longer while and, despite the dated visuals, I enjoyed it. The atmosphere is great, especially if you watch the news broadcasts which show you the backstory piece by piece... Plus you can often take different paths to finish your objectives, unlike most (if not all) current FPS games where you can only follow the one single path which isn't blocked by debris, or one-way/locked doors... ;)