Just make sure on your first playthrough you get as many of the non compulsive achievements done as possible, as some will be significantly harder on the higher difficulties. So yes, you can just enjoy those two playthroughs.
You can leave all the IC stuff till your compulsive playthrough as well if you want to.
The compulsive Guide contains everything that you need to know as far as missables stuff goes. However you will need to create every item in the game and for that you will need to do some searching around for were to get those items (just about everything you could possible need is already on the forums).
The chest guide is not needed at all, every chest that you need to open is also listed in the Compulsive guide.
hey pants ToastedBred keep saying i have to close my Games on demand because hes already doing it but mine was posted before he told me this and its all acurate and upto date he is saying that i took arcade demos but we talked about it and he said i could combine our ideas hes welcome to it but my games on demand is clean and easy and already up so why should i have to take it down? hees the link http://www.xbox360achievements.org/f...d.php?t=166971
im not sure if this is the right person i sould be talking to, if not your you tell me who i should be?
I found the achievements for Halo ODST. If your intrested check this out below http://www.youtube.com/watch?v=lMA_9Y9f9Vc
47 Achievements total of 1000, i was unsure on how to post them my self on this site ((if i even can)) so i thought i would try and send them to one of you. Hope this helps message me back if it does.