Gamers.com has reviewed Halo, who I gather liked the game since they called it the best first person shooter ever . Going on:

From the very start, you are drawn in like no other game, due to the well-scripted dialogue and storyline as well as the natural immersion the first-person perspective provides. Featuring as many shocking and exciting plot twists as Metal Gear Solid 2, Halo sheds the ultra-stealth focus of that title and replaces it with white-knuckle intensity Goldeneye wishes it had.

Gamers.com scored Halo 10 out of 10 themselves, while their average reader review is 8.9 out of 10. (Thanks HBO)