There are no alternate outfits in the first AC game. There's the supposed "Armor of Altair" from AC2 that is black, but whether or not that was ever actually worn by Altair is debatable, and the clothing matches Ezio's style way too perfectly. Though you could probably argue that the clothing was custom made by the Auditore family, and that it's just the arm

If you keep seeing the same Artifacts, move on to the next, if the counter is finished, also move on to the next. If you keep seeing the same Artifacts but you’re sure there has to be another, get yourself killed for a quick reload. It’s not the most fun thing to do but it’s not too hard fortunately. jessepitcherband.

App is free, but it has a $1.99 "Premium" feature which just unlocks more assassin slots and the ability to purchase stronger assassins in-game. But no, you can unlock all of the outfits for free, but only Altair's comes from the Companion app, the others (Edward, Connor, and Ezio) come from the AC Initiates thing on Ubi's website. . 148 499 449 422 230 263 119 446

how to unlock altair outfit in ac2