Critics Consensus: Exuberant and eye-popping, Avengers: Age of Ultron serves as an overstuffed but mostly satisfying sequel, reuniting its predecessor's unwieldy cast with a few new additions and a worthy foe.
Overall, I agree with this assessment, from my novice perspective. The movie definitely grabbed my attention, spurred some laughs, and was a post-movie conversation starter with friends and family. However, there are specific pluses and minuses that are worth a brief review.
Plus: Based on seeing the movie on the standard screen, the graphics are state of the art and were pleasing to sit through.
Minus: As with the latest Lord of the Ring’s film, the special effects crowded the movie in frequency compared to the first Avengers. However, this may be due to the key evil villain, which is Ultron, was computer generated.
Plus: For the action enthusiast, there was plenty of it.
Minus: There was no key good. vs. evil battle – because the whole film was one constant war scene.
Plus: There seems to be a monogamous relationship between the Black-Widow and the Hulk (Bruce Banner) starting to bud based on accepting one another for who they are.
Minus: Not being married yet, there is a reference they desired to be in the shower together (though nothing is shown). Moreover, their flirtation can go beyond simple banter.
Plus: Ultron played a better villain than Loki. Loki had too many “HA HA!” evil laugh moments in the original.
Minus: Though powerful and stealthy, Ultron was overly cocky of his pending success. Though this is classic evildoer pride, his mammoth sized ego about his initial plans led to his demise at the hands of Vision, Ultron’s creation gone semi-rogue against his creator. However, maybe Ultron did have a backup plan?
Plus: There was an allusion, overall, that the world needs to be saved from itself and that we are in need of a savior. It offers a message of hope that many have been drawn too, including myself.
Minus: Ultron does offer some cheap kidney shots at certain parts of the Bible and the Christian worldview in general. Most Christians in touch with today’s entertainment are well aware of (moderate to high frequency) someone making fun of, calling into doubt, or outright being hostile toward Christianity. This is very prevalent and almost accepted as a social norm however, that does not mean we cannot say this is a “minus” to the Avenger’s sequel. Though a fictional character, Ultron’s utterances are sometimes attacking straw-men instead of the actual mere Christian truths C.S. Lewis and others have shown to be rational. The Christian worldview is a reasonable faith to believe in. See books like Reasonable Faith by William Lane Craig that you can search for in the Amazon tool to the left of your screen.
 http://www.rottentomatoes.com/m/avengers_age_of_ultron/ (accessed 05/2015)
 This goes both ways. Christians can be outright disrespectful and ungentle when sharing about different truths in this life or the next.