Wonderful!

Don't stop writing for this fan fiction! You are doing a great job with it, and that I've read, there isn't any swearing yet! Good job!

"Hopefully, this would be a nice, calm, uneventful Christmas." That's like sending Murphy's Law a nice, fancy, platinum invitation to crash at your pad for a while.
Great chapter. Can't wait for the next one!

I'm extremely confused by some of the things happening in the story as of right now. I'm only pointing these things out as critique for future help of the story and not as some kind of attack against yourself or your story. You have mentioned "Iant" multiple times in the story yet non of is know what it is, mentioning something that is nonexistent is extremely inconvenient if the reader doesn't know what it is. I feel you need to at least give an explanation about what "Iant" is, you may know what Iant is but us as the readers don't share your mind, so if you plan on using a fictional religion you made-up, you're going to have to explain what it is before throwing it into a story where the reader has NO idea what you're talking about. Hopefully everything I've said won't be taken personally, we all need critiques as writers so we can improve and move forward. Good luck on the story, hun.

Ooh. Another cliffhanger. I don't know about you, but I'm on the edge of my seat.

Oh dear. In the words of my best friend, *Gasp* PLOT TWIST!

Great chapter. I can't wait for the next one.

Oh no... Not Diana! I kid. I know she poses a threat to Loki's plan.

This is so good! Please write more:)

please write more

Great chapter. I really like the creativity that flows through.

Ooh, grounded? Nobody grounds Diana Stark!

Oh my gosh! I get it!

"You LET GO, brother! Thor thought." How many times I have thought the same thing...
"Tony, don't call Thor names. It's hazardous to your health, and the health of everything around you," Again, very true.

Steve shook his head as Tony rocketed out the back of the jet, and Diana said, "Might wanna get used to that. It's normal."
"It's gonna get him killed one day!"
"Tell him that, not me!" -LOL! Awesome, and so true...

The scene in at the party is one of my favorites, just the way Loki swings the staff around and bats the one dude out of the way. And then the look on his face when he jams that prong-thing into the other guy's face...Sorry, fangirl moment. XD
Back to the review...
I will be honest and say that it seems like you're rewriting the movie almost verbatim, but I like it. You're adding enough of your own dialogue to it so that it's not exactly the same. I like Diana's super suit, btw. :)