I've been working on this guide ever since a week and half before the US release. Just about every section is done on it now. The only section that isn't finished so far is the Raid Mode section. I'd like to make a sort of mini walkthrough per stage... maybe per difficulty, so this will take some major time to fully complete. Therefore, as of February 23, 2012, I now consider this guide "complete" since the walkthrough for the main campaign is fully done and so is the majority of everything else.
I'll get to the rest of Raid Mode throughout the remainder of the month and try to finish that section up. I might add a Hell mode section as well. Honestly, there are only a few parts of Hell mode that I deem truly harder than the normal mode once you get used to it. The final boss in Hell mode is pretty ridiculous if you ask me, but he's not so bad if you remember to bring the rocket launcher to the fight with him.
Resident Evil: Revelations is a total blast of an RE game. I seriously feel this game offers a better RE experience for the main campaign than RE4 and RE5. It has many more elements from a survival horror game and less emphasis on action. I'm so very pleased with this game. The mini game portion, Raid Mode, is really good too. The three difficulties in the mini game really help out in the replay value department - there is so much to complete in Raid Mode. It's good to see Capcom trying out a new type of mini game instead of Mercs once again.
Oh, and here is one bit of extra info for the post below. Here's another reason why I will never say "I quit" with RE5 Mercenaries:
Because of the great friends that I have made from RE5!
RE5 Mercs Partner - A player that will help you try to achieve a great score.
RE5 Mercs Friend - A player that will help you try to achieve a great score and still stay in contact with you once RE5 has been turned off for the day.