[Somewhere out in the European mountains, Thor throws Loki into the side of the mountain. He raises the mighty hammer, MJÖLNIR. He looks down at his brother, who he thought to be dead and is angry to see him alive in this fashion.]

THOR: Where is the Tesseract?

LOKI: (LAUGHS) I missed you too.

THOR: Do I look to be in a gaming mood?!

LOKI: Oh, you should thank me. With the Bifrost gone how much dark energy did the Allfather have to muster to conjure you here? Your precious Earth.

[Thor drops MJÖLNIR, causing the mountain to quake. He picks up Loki. His brother. Although Thor is pissed for what he has done, a family is everything to a man or god.]

THOR: I thought you died.

LOKI: Did you mourn?

THOR: We all did. Our father...

LOKI: Your father. He did tell you my true parentage, did he not? Thor lets go Loki, who walks away from Thor, causing an even bigger wedge between them.

THOR: We were raised together, we played together, we fought together. Do you remember none of that?

LOKI: (TURNS AROUND) I remember a shadow. Living in the shade of your greatness. I remember you tossing me into an abyss. I was and should be king!

All the avengers, saw Loki in a different light, especially Yelena who lived in her sister's shadow during her time in the Red Room. 

THOR: So you take the world I love as recompense for your imagined slights. No, the Earth is under my protection, Loki.

LOKI: (LAUGHS) And you're doing a marvelous job with that. The humans slaughter each other in droves, while you idly threat. I mean to rule them. And why should I not?

THOR: You think yourself above them.

LOKI: Well, yes.

THOR: Then you miss the truth of ruling, brother. Throne would suit you ill.

[Angrily, Loki shoves his brother to the side. He walks back up to the ledge. Turns around.]

LOKI: I've seen worlds you've never known about! I have grown, Odinson, in my exile! I have seen the true power of the Tesseract, and when I wield it...

THOR: Who showed you this power? Who controls the would-be-king?

LOKI: I am a king!

THOR: Not here! You give up the Tesseract! You give up this poisonous dream! You come home.

LOKI: I don't have it. You need the cube to bring me home, but I've sent it off. I know not where.

[Mjölnir flies back to his grasp.]

THOR: You listen well, brother. I...

[Thor is knocked off the mountain by Iron Man who tackles him in mid-flight.]

LOKI: I'm listening.

Everyone laughed slightly.

EXT. FOREST - CONTINUOUS

[THOR and IRON MAN CRASH into the forest. Thor rolls himself up. IRON MAN is still standing, but keeps his distance. The helmet opens up.]

THOR: Do not touch me again!

TONY: Then don't take my stuff.

"Stark, people aren't objects" natasha and yelena say at the same time, voiced raised slightly 

"Yeah, i know, i know" tony replied scared.

THOR: You have no idea what you're dealing with.

TONY: Shakespeare in the park? Doth mother know you weareth her drapes?

THOR: This is beyond you, metal man. Loki will face Asgardian justice!

TONY: He gives up the Cube, he's all yours. Until then, stay out of my way... tourist.

[The IRON MAN helmet clamps up and he walks away. In one quick move, Thor pulls Mjölnir, throws it, and KNOCKS IRON MAN clear across into a tree.]

[INSIDE THE SUIT]

TONY: Okay.

[From the mountain side, Loki watches in amusement. Thor raises his hand. Mjölnir flies back to his hand. Thor SWINGS the hammer, summoning a ray of energy. IRON MAN stands up and from his HAND BOOSTERS, a BLAST of ENERGY KNOCKS the MIGHTY AVENGER on his ass. IRON MAN flies back up and knocks Thor into a tree.]

TONY: Right back at you, bitch!

[Thor, kneeling on the ground, pulls Mjölnir to his hand, raises it to the skies and pulls in LIGHTING and THUNDER! Thor points the hammer at IRON MAN and the outpouring of bolts lighting increases in intensity. IRON MAN falls back.]

[INSIDE THE SUIT]

JARVIS: Power at 400% capacity.

TONY: How about that?

[IRON MAN FIRES AWAY FROM HIS HAND BOOSTERS, pushing Thor to his knees. Like two gunslingers ready to draw, both Thor and IRON MAN fly towards each other and meet in the middle and ascend up.]

EXT. SKY - NIGHT

[The two battle. IRON MAN grasps THOR, elbowing him and SMASHING him into the side of a mountain. THOR LEAPS off the mountain and takes IRON MAN with him.]

EXT. FOREST - CONTINUOUS

[THOR and IRON MAN crash right back down, smashing down every tree possible. IRON MAN YANKS Thor right up. Thor grabs both HANDS BOOSTERS and begins to CRUSH them. Tony quickly CHARGES as much energy as he can and SHOOTS ENERGY in Thor's face. Thor FALLS back, losing his stance. IRON MAN HEADBUTTS Thor, with his gold-titanium alloy helmet. Thor... HEADBUTTS him with his head and actually sends IRON MAN across the forest. IRON MAN boosters up and flies back at Thor, grabbing him by the arm and cape and SWINGS him into another tree. Thor looks up, ready. Thor runs with all his patience out the window. IRON MAN SWINGS and MISSES, giving Thor the momentum to grab him, lift him and SMASH him down hard. Thor summons back Mjölnir to his hand. Just as he's about to put the hammer down, IRON MAN uses his HAND BOOSTERS to SKID across the ground and trip Thor over. Standing up, Thor looks for him, but from behind him, IRON MAN CRASHES into his back. Thor stands facing IRON MAN. Ready to pounce... CAPTAIN AMERICA'S shield RICOCHETS off both Thor and IRON MAN, stopping them. They look up and see CAPTAIN AMERICA standing on top of a fallen tree with the shield back in hand.]

CAPTAIN AMERICA: Hey! That's enough! (comes down; looks at Thor) Now, I don't know what you plan on doing here.

THOR: I've come here to put an end to Loki's schemes!

CAPTAIN AMERICA: Then prove it! Put the hammer down.

IRON MAN: Um, yeah, no! Bad call! He loves his hammer!

[THOR BACKHANDS IRON MAN LIKE A PIMP WITH MJÖLNIR. Thor, losing all tolerance with this SENTENTIAL OF LIBERTY, raises the hammer.]

THOR: [to Cap] You want me to put the hammer down?

[THOR LEAPS HIGH INTO THE AIR, RAISING THAT HAMMER. CAPTAIN AMERICA CROUCHES DOWN and HOLDS UP HIS SHIELD. THOR brings that hammer down onto the shield and a MASSIVE IMPLOSION OF LIGHT reacts to the vibranium shield creating a MASSIVE SHOCKWAVE THAT BLOWS UP ANYTHING STANDING WITHIN A MILE. IRON MAN stands up, looking around like 'holy shit.' Lying right next to him is Cap, who never takes his eye off Thor. Thor looks at both men.]

CAPTAIN AMERICA: Are we done here?

[THOR, CAPTAIN AMERICA AND IRON MAN STAND THERE.]

~~~~~~~~~~~~~~~~~~~~~~

A/N 

Not a lot of reacting, because it is 10 past 1 in the morning and my reactions would be different and there will be Molly and Dumbledore bashing but probably more in AOU.