Initiation DLC

Anyone else unable to obtain the Initiation DLC achievements, even with the offline workaround? When I try to obtain them offline, I can't even access any of my DLC challenge maps, only Batman. I've seen people able to play the DLC offline without the update, so I'm just wondering why I can't seem to.

Anyone have any idea?

You're probably doing something wrong. If you indeed deleted the Title Update, you need to do the following:

-Start up the game.
-When it prompts you to update, select Cancel.
-Go through the menus to select challenge mode (select the correct storage device).
-Once in challenge mode, go to Bruce Wayne.
-There will be a message telling you about how your score won't be saved or posted to the leaderboards. Keep going.
-Complete any ranked map (predator or combat) as Bruce Wayne (doesn't matter if you get 3 medals or not, assuming you've already got all 72) and the achievement should unlock.

I just got this achievement yesterday with this method (because it's still bugged), so I can confirm that this still works.