@AlgorhythmFirst, I would recommend reading starting from the Hulk-Thor-Ms. America-Loki collaboration, which can be found
here.
For the summary: Miles Warren (aka the Jackal) is set on exacting punishment on Spider-Man for the death of Gwen Stacy (although it was not entirely Spider-Man's fault). The Jackal's first attempt (which was sort of impromptu) was unleashing the Raptor (Damon Ryder), who was transformed into a raptor-human hybrid, against Spider-Man. Spider-Man (along with Loki) was able to subdue the Raptor (and SHIELD showed up to take Raptor into custody). Next, Spider-Man stumbled upon a bipedal Triceratops with metallic laser horns (blame the Japanese for it
). WIth the help of Hawkeye, Spider-Man was able to subdue the creature. The creator of this creature has contacted Miles Warren and they are planning on meeting.
Bruce Banner was recently transformed into the Hulk. He was trying to get out of New York, but "Thunderbolt" Ross and the Hulkbusters attacked. Thor and Ms. America joined the fray. Loki also joined and disabled the Hulkbusters' weapons. Loki finally got Hulk out of there and teleported him to Australia, but not before a large building was severely damaged.
@Everyone else, is this a good summary? Did I miss anything?