My achievements simply stop out of nowhere, it's the only game, there are no mods in the games and especially in DDDA it stopped at 54%, is anyone having the same problem?
PS I'm using Google Translate because it's not my native language.

Correction, achievement as a concept is an online feature. Do not thank Capcom, thank Microsoft, XBOX dept.

@turfang Achievements are based on your progress, and posted on your Galaxy profile. And your progress has to be read by Galaxy app. from your save file. No connection to Galaxy, no badges.

It has to do with DRM. Capcom set the game up where to get the special armor pieces for defeating the UR Dragon, you have to be online; you can't get your name on the slab rankings in the UR Dragon 'lobby' unless you are online.

To obtain special armor pieces you have to beat online variant of Ur-Dragon. And online Ur-Dragon is an online feature, tackled by default by multiple players. It has just as much to do with DRM as multiplayer match in Call of Duty.

Do you recognize the distinction between a game feature that requires server connection and DRM?

Having to be online means the game can "check up on you" to make sure that you actually own it or that it can be disabled if the company wants your copy to be revoked. Any game that requires an online connection to play (and get special items and/or achievements) is as good as DRM to me.

Oh, "can" check?
Are aven aware how stupid sounds what you say? Dragon's Dogma online service is as cost effective and rudimentary as you can get. It was based around Playstation leaderboards - this is where numerous technical limitation come from. It's incapable of verifying shit, not even mentioning tampering with your game.

"Any game that requires an online connection to play (and get special items and/or achievements) is as good as DRM to me."

So, online games bad? This explains a lot. Well, whether you want it or not, some video games' features will always require server connection - not because DRM, but beacuse they are online services, they cannot work offline. One of such services if your Galaxy profile - y know, the thingy capable of registering and displaying your achievements. No XBOX Live! account, no achievements. No PSN account, no achievements. No Steam account, no achievements. No Galaxy, no achievements.