You get one instruction booklet and a little comic too, which is the second one. I don't like these little comics because they make no sense. There's no words and the story's in each seem to repeat themselves and never finish. But anyway...

These are the two new pieces included in the set. A trans-clear flat stud (which you get 3 of) and a new side-join piece...thing which you get several of. Quite good little pieces in my opinion.

And here you have the finished set. Three great minifigs and a cool truck.

These are the bricks you get as spares.

A better look at the SHIELD truck. It's not totally true to the film (Which is totally amazing and I've seen twice in 3D!!!) Because the truck in the film has back doors as well...

and obviously doesn't feature useless flick-fire missiles! haha! The lumps above the rear wheels get in the way of you actually being able to fire them!

The doors open on both sides. Any printing you can see is all stickers.

This is the playability feature on this set. A flip-board thing to stand Loki on and blast him from the back of the truck. It works okay-ish. The amount you can ping the board though means that Loki only flops onto your hand, really.

Now, onto the figures. here is the Mark 6 Iron Man! Really cool in my opinion. People have been saying that the helmet is way too big but actually, it's not that bad at all. Yes, it's larger than it should be but that's so that you can get an actual minifig head inside.

Yes, he has back printing too. Personally, I'd have liked to have seen some printing in the arms and the sides of the legs too, but never mind.

Here he is with the helmet open. It works quite well in all fairness. I like it.

Now, Hawkeye. Nice torso design and a great new bow.

From the back. A better look at the cool bow and the reverse side of his head which is nice looking. My one complaint with this is that they printed his quiver of arrows onto his torso, I'd have liked it to have been an actual piece.

Now Loki himself. Nice torso although annoyingly it has no back printing and his head only has one face too. His horned-helmet is rubber and his staff is somewhere in the middle, it's a sort of, flexible plastic sort of thing. His horns are way too large as well. And the cosmic cube is just a simple trans-clear brick. I would have liked LEGO to be a bit more creative with that but never mind.

Build:7/10
Figures:9/10
Pieces:9/10
Playability Factor:10/10
Value For Money:9/10
Overall:8.8/10

Review:
This is a very good set. It's not true to the film at all in the fact that the truck should have back doors, Loki's horns are too big, the cosmic cube looks wrong and should be in a suitcase and Iron Man hasn't even been introduced yet when this scene occurs. However, despite this, it's still a fun set. Younger builders will have great fun whizzing the truck around and chasing it with Iron Man. The three figures are very good but not perfect.
So yes, there are flaws with this set, but it is still very good and worth it's £19.99 price tag. I wouldn't pay any more for it but I think that for once LEGO has got the price spot-on. I would recommend this set to Marvel fans the most but other people can just as easily enjoy it. A very good set.