I'm not so sure Microsoft's policy for charging for DLC has much to do with achievements in particular.  Back when Crash Course was announced for L4D1, the guys at Valve made some comments that implied charging is just the way things go with MS:

As for Red Dead Redemption, I think their hand may have been forced in that situation.  It'd be a PR blunder if the DLC for the biggest ps3/360 release thus far this year was offered free on PSN but not XBL.

Well I`m not a fan of MMO's, however I do feel for 360-only owners who want to play this game. Hopefully it gets sorted out sooner rather than later. :)

It was just likely that an additional fee could have been a problem for games that already require a pay subscription. But forcing publishers to charge money for DLCs that they give for free on other platforms is just committing suicide for greed. If even Gabe Newell, that always was pro MS, isn't happy, this should suggest MS something...

agreed. i didn't say SE was being unreasonable. i beleive MS is though.

Definitive proof that Capcom >>>> Square. <3 <3

Can't really say for sure who is the one being greedy here. But that IMO is pointing to Microsoft.

Doesn't want joint servers. Wants people to pay for the online service to play the game. and wants a cut of SEs profit money. That's a little messed up.

M$ is ....all about money first...games, gamers ... whatever!

MS would be stupid to pass up a game of this calibur......or maybe they want more exclusive support from square before they let them??? Hopefully whatever it is it gets resolved!!!!!!!!

This is true, they need to just get over their stupid policy and let it release simulationusly with the other versions.

After RE5 I can't possibly agree with that.