All Loki, no Thor.

Rating: 5/10 (6 February 2014)

I would give this 5.5. In fact, I am surprised by this high rating in IMDb, which I have been (and am) often using as a reference before watching any movie.
Here, I come here to review this with no perfect English and shallow knowledge on movies.
What I want to say is that this isn't worth watching. I watched this merely as a fan of the "Thor(2011)" (Seriously, Thor: The Dark World a 7.7 rating???). In comparison to the previous one which nicely introduced the character of Thor and the charming villain Loki, I don't see anything in here. There are only fighting, nice graphics, with no real substance (I truly agree to Viktor Cicvara's review) to draw the audience into the story line. Such one-dimensional characters and full-of-coincidence story. Only made me a fan of Loki, who wasn't the main character of the plot. Nice CG work, but worth no watch.
-------Complete Spoiler only for those who are not willing to watch this film, yet curious or who doesn't care about spoilers---
Suddenly, Jane gets dragged in (really out of nowhere) and soaks in a tremendous power that will destroy the world. Thor takes her to Asgard. The dark elves awakes after a millennium of time (maybe because the power have come out into the world as they waited. For a millennium!!!). Attacks Asgard and gets rid of its defense system so easily as if they could always have done it (with a little guidance of Loki). Kills the queen and run away because of Thor (so powerful to scare them off and hurt them). With the defense down, Asgard in danger. The King says that Asgard will fight back, Thor accuses him for being cruel...? As they cannot win the enemy, Thor decides to give them "power" and easily kill them (What a plan to save Asgard). Just as expected, the power is given and the whole nine realms in danger. What is surprising is that the once-mighty Thor cannot suddenly beat a single subordinate who he have already scared off. Loki gets killed saving Thor. Thor angry. Thor go earth. Jane know where the nine realms collide, which should happen every 5,000 years and happen to be soon. Thor fight the dark elf very well, win. (Goes in and out of universes so many time.) Thor return. The King of Asgard complements him, saying he's the true king (What a nice plan he has completed.). Thor rejects to be in a dehumanizing position. Turns out that Loki wasn't dead and acts to be the King via illusion. Loki prevails.