The ESRB's site doesn't really go into details with how they come up with their ratings, but here's their content descriptors for each game:Well, HW2 has the Flood and it's rated T, but IIRC their dismemberment shtick was toned down.
I still don't really know why the non-Flood games (ODST, Reach, 4) were rated M cuz there wasn't anything THAT crazy in them. I guess 4 had that scene with the scientist lady getting her face melted off on-screen but that's about it.
- CE: Blood and Gore, Violence
- 2: Blood and Gore, Language, Violence (H2V almost had Partial Nudity added due to the .ass error message in the HEK)
- 3: Blood and Gore, Mild Language, Violence
- ODST: Blood, Language, Violence
- Reach: Blood, Violence
- 4: Blood, Violence
- 5: Blood, Mild Language, Violence (and Teen rated)
I wouldn't have gotten so many achievements without Silver's guides. LASOs are still all I have left in the MCC, but if I ever get around to them, you better believe I'm gonna be following his videos.
Thanks to this guide, I'm now five achievements richer.
Classic, Uplift Reserve, Deference of Darkness, Xenophobia and Two Places, Same Time. Only took me four tries. I thought there was one achievement to complete a level on Legendary without dying.