Meh. I too am somewhat disappointed with the Runaway series. Both tend to suffer in both the puzzle & humor aspects. Humor, I can forgive because I suspect that a lot of the humor doesn't translate well, or at very least the translation isn't done all that great.
However, while Runaway 1 felt a tad too long, Runaway 2 felt like half a game. Its much shorter than R1, and leaves you with a cliffhanger after a totally nonsensical final chapter.
Yeah, I really hated that final chapter.
Plus, the whole
Spoiler:alien
angle just didn't work for me. It seemed really stupid & out of place.
SWB