Nice and simple - believable. Very true to the nature of what fakes are supposed to be. I love it.

Animation looks great. I give it a 5 (out of 5)

I look forward to more from you.

What's with the dark box that comes onto Reptile at some point of a rerun? There are those pixelated things around him from time to time. Try to address them in your future projects!
I like that Reptile uses the Slide for proceeding here, common to his gameplay in MK9. When the Fatality began, everything except Shang Tsung and his throne was dimmed. As tough as the old Shang Tsung is, he could've also been dimmed. Not a big deal. This iteration of Reptile is really interesting and something that I'd like to see even in the games, as we saw another iteration of Smoke in MK9 too (the hidden one). "Yellow + Blue = Green", that's what started it all.

Now this is an awesome animation. I always hated when people would try to make something that was clearly not even possible in the games, and add stuff that was never there. This, on the other hand, looks authentic to what MK1 had, with only the minor addition of Kano getting scared. If I was an idiot looking at this, I'd ask you how to play as Reptile in MK1. Bravo.

pretty badass bro

It's pretty simple and awesome! As people said it really does look realistic. I like the fact that you didn't use Sub Zero for this as many people do, but went with classic MK1 when Reptile had moves of both Scorpion and Sub. Nice job :) 5/5