Hello! I’m here from WA, reviewing this story completely fandom-blind.
I like your opening hook, and how it sets off right from the start that there’s an important choice the main character has to make. Then with each sentence, the choice that is alluded to comes more clearly into focus. Because it is such a dramatic situation, the stakes are high and it incites a sense of drama and suspense that drew me in and made me very curious to see how it would play out.

It’s also interesting to me that although I am reading this fandom-blind, and have no idea what the pedestal is, that moment when he puts his hand on it feels so pivotal and I have to give you kudos for that. It made me want to gasp, even not completely understanding what would happen, and it felt like a very effective bit of suspense.

I also loved the smaller hooks scattered throughout the story. Like when Desmond wakes up and realizes he’s completely naked, but that isn’t the most worrying part-I was so curious to hear what the most worrying part would be!

I also enjoyed how you foreshadowed the executioner scene in Desmond’s death vision. (Not entirely sure what to call it, considering I’m fandom blind.) When Desmond looked down on that scene from the rooftop, I understood immediately what was going on, and it also gave me a sense of being within a story where supernatural things are happening, which was helpful.
After the fight scene, when everyone was having a joyful reunion, I felt that the story did start to lag a little. There was the smaller hook of what had happened to make Desmond be back in time in the first place, but at that point, the big conflict he faced-saving his friends from being executed-felt resolved. I could have used a little bit more pull or looming conflict during that part. That could be partly because I am fandom-blind. I imagine if I were more familiar with these characters, I might be very curious to see what was going on with them now that the timeline had been altered. So take that comment with a grain of salt. ;)
Then when you threw in the line about Desmond being stuck in Italy centuries before he was born, and wondering what he was supposed to do now, I was pulled back into the story again. I wanted to see how that conflict would be resolved. Also, his awkwardness because of the unusual situation was really amusing and made me chuckle. I thought you wrote his dialogue really well to portray that.
I liked the ending, that Desmond was adopted into the Italian family and that he would have a future there, despite being pulled into the past and away from his own life. It made sense to me that they would choose to do that, especially with their perception and their quick thinking to realize that he was alone and did need a place to stay. Overall, a very interesting story, and it seems like a great alternative timeline with a happy ending.

SPaG:
Generally, SPaG is really great! There really isn’t a lot to nit-pick, but I did catch one thing:
When Desmond is on the rooftop, observing the scene, we slip into his head and hear him say, “Which just figures.” But since it’s not explicitly marked as an internal-thought quote, this line should still be written in past tense, so “Which just figured.”
There’s a missing space in the line, “Because as of roughly twenty minutes ago and beforehe should have been…Uberto Alberti was dead.”
In the sentence, [A prospect that was nerve wrecking but also wonderful…], the correct spelling is either nerve-racking or nerve-wracking (a commonly accepted variation).
[It was just the Maria, Giovanni, and their two eldest sons, he noted.] I think you meant to omit the word “the” in this sentence

Style: I feel like there is a very liberal use of italics in this story. I realize this is a personal style thing, however, using italics for emphasis too often takes away their power. I’ve head reliable sources recommend that you only use italics for emphasis maybe once or twice in an entire short story.
There was one time in the fight scene when Desmond refers to himself as “the frozen Assassin” and that threw me for a second, since it seemed like an unnatural way to think of one’s self. I had to read that line a few times to understand that it was Desmond who was the frozen Assassin.
But your sentence structure, your flow, is all very good and compelling. I enjoyed reading the words you wrote and found that they moved along at a good pace without a bunch of obnoxious filler, and I cannot tell you how much I appreciate that.

Overall, great job! I enjoyed reading this story, and all the action in it, even completely fandom blind, which isn’t something I do a whole lot of.

So I have also just started playing this game (got the Ezio series for PS4) and been reading esama’s stuff, too. I have the urge to time travel save this family! This is the family Desmond deserves!

This was actually really cool. I liked it

Yes please!

I'm big on character development and I wish this was cannon...well the not hanging Ezio's father and brothers part, but that part is essential to character development and story. It is nice to see what others can come up with as an alternative to that pivotal scene in the game. Well done!

So this is now the definitive cannon and I refuse to accept any other.
As someone who also read and re-read esama's, well, everything. And then had to play the game, because of course I had to. I felt every single word, every scene, every POV and action in such a visceral way. It is perfect. I've no words and I am not quite certain I am even speaking coherently.

Desmond is adopted and he doesn't know that yet. Ezio super confused why this guy always looking to him for help, but rolling with it because he is Ezio. Big family Auditore, Desmond included!
Also Desmond trying to smoothly lie around 'i am your descendant from centuries in the future, I sacrificed my life via ancient technology to save the world but somehow turned up here in my younger body and immediately changed the world history and might have written myself out of existence'. And failing to say anything believable immediately.

Just. All of it. You gave me feels how dare you

OH MY GOD. I am already in love with this! Will there be more chapters? Or is this a oneshot? Ohhhh please tell me there will be more, I adore the idea of the Auditore taking Desmond in and raising him.

Great one-shot

Good, I like the family. I hope to see more of it.

Oh my gosh. I love this so much! I know you marked this as complete but I can't help marking for following JUST in case you happen to get more inspiration and write more! I love the Auditore family too.

Yes! I love AC series because of esama too! Oooh thank you for this story, there is not enough (good) AC fanfics here XD.
I had so many stories in my mind because of esama's AC stories. I hope you release another AC stories.
Thank you again.

I CANNOT BELIEVE YOU DID THIIIIIS, look me too, have reread Esama’s stories several times, last month the last time, and I wa for more Desmond fixing it stories and HERE YOU COME, TO MY EMAIL INBOX, and just, blesses me with content I’m craving. Wow. I am shock. Like I’ve know for a long time I just love your taste also that our interests often align, but THIS WAS NOT EXPECTED. THANK YOU.
I’m soft. This made me soft. I just LOVE THAT YOU SAVED THEEEEEM. Like that moment. good food, the best food. Soft Desmond. I can’t articulate! I’m so happy! Now this will be added to my list of stories to reread when I’m in my Desmond Deserved Better moods.

I would love to see this continued, Thank you for writing it

aaaaaaaaaaaaa found family strikes again!

Hell yeah this reminded me of esamas stories so much i love it great job i cant wait to read more!