Boring. This film managed to temporarily kill my interest in Thor (until the release of Age of Ultron and Ragnarok). The movie just doesn't deliver anything worthy for Thor at all and feels the need to attach a forced love story between Jane and Thor. The villain is forgettable, the action is quite unispiring, and the overall plot is just boring. Thor is honestly not given much to do and this film manages to make Loki an even more interesting character. Though I did enjoy the twist with Loki faking his death and casting Odin out of his throne, the movie failed to further develop Thor's character and is honestly a forgettable installment in the MCU.
The mid-credits scene featuring Benicio Del Toro as The Collector was honestly great and added a layer of mystery surrounding the Infinity Stones.