article_snippet.sent: In the meantime, the key points of interest surround how many surprises and twists can be wrung from a format and set of expectations that demand great fealty from core fans; any significant deviations are taken as personal betrayals by the hardest-core geeks.
article_snippet.sent: But a major chase through the city involving a runaway subway train falls flat due to basic conceptual silliness and poor action continuity.
article_snippet.sent: Ultimately, Whedon's efforts to invest the heroes with a degree of uncertainty and vulnerability comes off as half-baked, as such an effort can only go so far due to the nature of the material.
article_snippet.sent: If ending on a dramatic cliffhanger note had been desired, the elements were there for the taking; including a semi-tragic component along with mystery about Ultron's ultimate fate would arguably have only further cranked up anticipation for the coming chapters.