Halo : Reach : Gods Must Be Strong and A Monument To All Your Sins!

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To get the 'Gods Must Be Strong' you must complete the campaign on legendary, you can complete it online or by yourself which leads us to the second achievement 'A Monument To All Your Sins'. To get this you need to complete the campaign on legendary, alone. The most strategic way of getting this achievement is to be careful and to get cover when it's at the right time and not when there around the corner of your cover.I have not got this achievement because you need to be patient... I'm not as patient. If you are good at Halo : Reach then this will be abit easy. Good luck!

Halo : Reach : 1m Firefight Achievement

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There is two ways you can get this achievement: Do it properly (online) or do it the easy way. Along the way - if you don't already have them- you can get three other achievements and you'll find when you do this method to get the 1m achievement.Ok back to the point. To get the achievement make yourself invincible and have any weapon (rockets are best). If your lazy you can download anything along those lines. This should take you around an hour but it's so worth a few G. Hopefully, you should get around over 100 G and will help you get some of the other hard achievements. Good luck!