Halo 2 > Halo 3 > Halo 3 ODST > Halo Reach > Halo CE
Based on campaigns.
My opinions on the campaigns
Halo CE
Its not bad, but the mission Assault on the Control Room was enough to lower my opinion of the entire game. I detest everything about it. Aside from that, other things i dislike are the level design, because it all look the same the whole way through and i always get lost, the soundtrack because it isnt really to my taste and innheneral it can be quite tedious at times and dull. And jot knowing where to go half the time doesnt help
Also, whats the big deal with the Flood innthis game? Its not that dramatic,myou just walk through a door and they're just there.
Halo 2
Its a disaster. The dullness and tediousness, the level designs, they're all disasters in their own rights. The one exceptionnis the the mission The Arbiter. I like the level design, farely easy to navigate and fewer timemsoent not engaged. But apart from that, its a disaster, enough said.
Halo 3
I love it to bits. The level designs, while farely linear at times, and great andkeep you playing and entertained. Asoloutely no getting lost and loads of action. I love the storyline as well, and the characters, the enemies, the missions, the emtire engine. Its amazing and its ky favourite halo campaign.
Halo 3 ODST
My second favourite Halo campaign. I really like the cocept of the Mombasa Streets being a 'hub' for finding ll the levels. Theflashback missions are great, plenty of action and an engaging and intense storyline. The last mission, Coastal Highway, was magnificent. So well designed and action packed. O was on the edge of my seat. Its a great game.
Halo Reach
Its not bad, but not particularly great. Maybe its just that it was such a sudden change to the series. I disliked the lack of Forerunner artifacts and the Flood, but they werent in the storyline. As a game itself, i think ts quite qell made. Fighting and action all the way through. However, there is a slight lack of plot development. It all just seemed lile you were just running around killing things for a while. But its quite good, better than Halo 1 and 2 (zips up flamesuit).
I am not including Halo Wars because i havent played it and its byna different developer plusnthe fact that its a totally different genre.
So,mthere are my opinions on all the Halo campaigns. Tl;dr Halo 3 is thr best, followed by ODST, Reach, CE and then H2
Please note than any poor grammar is down to this iPad, not me
[Edited on 12.10.2011 5:32 PM PST]