So something concerns me, this is from a recent steam thread:
Ubi_TheBerry (developer)
"I'm afraid that following the closure of the Assassin's Creed II online services, certain additional content, including the Deluxe Edition's DLC, can not longer be accessed or redeemed in-game.
As a result, the Deluxe Edition has been delisted from Steam, but current DX edition content will remain inaccessible.
Sorry for any disappointment or inconvenience caused.
If there's anything more can answer or help with, please let us know!
- Ubisoft Support"
source: https://steamcommunity.com/app/33230/discussions/1/3181233066900714481/
SO TLDR: from various threads I have gathered, the issue seems to be that because of the server shutdown for old ubisoft titles, the dlc for the deluxe edition or any version besides the remaster, can no longer be accessed in game without a 100% save file, meaning it is impossible to 100% the game on any new save file, even if you own the deluxe edition
My question is if there is another work around that could bypass the DRM for these locked DLC's or is it impossible due to it being tied to the ubi servers?