It makes no sense, yet isn't nonsensical enough to be entertaining. (I love Battleship in an MST3K sort of way, full disclosure.) You have assassin guy removing his finger, then using sword gauntlets that don't make use of that fact, Assassins who drop the actually iconic white and red look to go with bog standard stealth grey, the fight scenes take place in dingy, smoke filled rooms with both sides wearing dull colors, the animus is a mechanical arm that's supposed to let you mimic the action of whatever you're remembering, except it can't do the forward rolls your ancestor did constantly, but that okay because even after it breaks, you don't walk yourself into a wall as your ancestor is walking around for reasons, centuries old assassin equipment is in perfect working order for, again, reasons, none of the .guards carry so much as a side arm, I'm supposed to believe an extremely white dude is on death row for killing a single pimp, the Templars were going to use an alien doohickey to, I dunno, rewrite everyone's DNA or something, and this whole mess of a plot is started because a couple of extremely white people decided to be the only white family in Baha California.
Seriously, if they decided to hide out in Saskatchewan, they'd have never been found.