Ivy here.
There was silence for a moment.
"You're going to lose," I threw in, turning slightly to look at Loki. "You simply cannot win."
I thought he was going to stab me for a moment. "And what leads you to believe that?"
"The Avengers was a movie in my reality. Huge movie, made a ton of money."
"What?"
"Yeah, apparently I'm from an alternate dimension. I know how this ends. And you won't like it."
I really needed to get Loki's spear away from my back. Unfortunately, I had never spent a lot of time training with how to do that sort of thing. It wasn't as if tons and tons of people ever found themselves in this sort of situation. I, honestly, had never expected to get into a fight for my life. Maybe a couple fights with boys at school or karate, maybe, but not one with really much at stake. I had been careless.
The spear seemed to press a little harder.
"It doesn't matter," said Loki.
I brought my right arm carefully behind my back. I honestly didn't know how well my plan would work. Death was pretty much certain if it failed. They didn't really teach how to defend against spears at karate. Still, I had to try.
I grabbed the handle of Loki's spear and jerked hard to the side. I stepped around it so I was on the outside of the spear.
He let go and grabbed my throat, lifting me off the ground then throwing me to the floor. Before I could get up, he grabbed me by the neck again. Somehow, I knew he was going to throw me out the window.
Unlike Tony Stark, I did not have a flying suit of armor to save myself with. So I grabbed onto his arm with one hand, locking his wrist against my collarbone to keep him from choking me, and swung both feet into his stomach. That did the trick and he let go, letting me fall. I rolled backward as I fell, mentally thanking my very tall black belt friend who had given me experience at similar falls.
"JARVIS, now would be a good time," said Mr. Stark.
The Mark VII flew straight into Loki, knocking him out the window instead.
"Thanks," I said.
"You okay?"
"Yeah."
"So we win?"
"Yes," I replied. "But you might not like how it happens. You are going to have to sacrifice something to win this, Mr. Stark."
He looked at me for a moment.
"Okay. What?"
"You'll know when the time comes."
He looked at me oddly for a moment, like he wanted to press for information, but knew he wouldn't get any answers.
"You stay here," said Tony. "Unless the tower gets destroyed."
"It stays mostly intact, yes," I said. "Though Loki gets smashed repeatedly on your floor by the Hulk."
He grinned.