Moon Easter Egg
The easter egg for Moonis pretty crazy and you can do it with 2 people provided one of you is Richtofen. Again you get all the perks once you complete it, although it doesn't count as buying them for the achievement, you still get at least 3 other achievements, completing the first half of the easter egg and revealing Sam, completing the easter egg and seeing the end result as well as PaP'ing 3 weapons with Mule Kick.
It took three of us a short while to complete it, as someone kept killing the crawlers we made, I won't say who it was, but I will say it was R. Rich, no that's too obvious, we'll say Rapturous R., yes that works.
I found the most challenging part of the easter egg to be collecting the souls around the pyramid, the first time yoy only need about 25, but the second time you need around 100. We tried to duo it in another game and the only advice I have is don't try to do it at round 25, terrible idea.
Although it's a crazy easter egg that develops the story greatly, I don't really see how they can continue with the story from where they leave it, if you've done it or seen videos you'll know what I'm talking about.
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I have followed you too far to fail now. I bear the gift of Death. You cannot outrun me.