It is easily worth $10 if you only want this DLC. The season pass comes with two of the Equipment packs from the store (I forget their names) and some Helix credits. Curse of the Pharaohs comes out in March, and I'm very excited to play it. I believe, if you enjoyed the main game to any extent, and want more, you should get the season pass.
Some people hate how AC has added them but imo it's a welcome addition. There isn't too much to say about it as far as skill tree, Origins does it better in just about every single way and Odyssey is only improving it but in actual ROLE PLAYING sense, Unity does it better somewhat. There isn't much choice when it comes to what you can upgrade or if you just want to spend extra money go get it. I got deluxe. two missions for $10 more, that will be paid content later. So $5 per dlc missionworth it to me. The paid versions will probably be bundled and cost $15 or $20. Your choice. I got deluxe. two missions for $10 more, that will be paid content later. Although I only had 5 locations left in the original game so I ended up getting the achievement before I launched The Hidden Ones. But I did already have the DLC installed with all of its achievements before I traveled to Sinai. So I would conclude that the new locations DO NOT affect the "Old Habits" achievement. 2.