Inferred Holocaust: Hulk stops the Abomination from flooding the city, but the ending doesn't address the city was left without power once the dam was destroyed.
It Was His Sled: You don't need to know much about the cast of characters around Hulk in the comics to recognize Blonsky's name and be able to predict how he will end up.
Jerkass Woobie: Blonsky. He's trying to kill you, he's a smug jerk to Ross, but in the end it turns out the whole big secret he was keeping in Mission Directive was that he was trying to find a way to save his wife the whole time.
Moral Event Horizon: Blonsky might be trying to save his wife for most of the game, but at the end when he's seen he's failed, he decides to cause a flash flood to destroy a major city, just to make Banner suffer. It promptly becomes painfully clear he's now beyond saving.
That One Level: "Protect and Serve", "Lockdown", "Strange Cargo" and "Freedom's Swansong" all come to mind.
The Problem with Licensed Games: Not just averted, but smashed to pieces by the game's outstanding combat engine, entertaining story, and a design team that knew their source material and weren't afraid to make use of it. Many critics said that the game actually succeeded in making them feel like the Hulk.