Excellent
Very fun! The crow seems less frustrating to control than in the last game, and I loved a few of the rooms (the scorpion one was great; extra interactivity with the environment in a game like this is always very interesting).
A couple things were annoying, however. I would have like to be able to hit some key on my keyboard to keep playing whenever that menu came up (often), since I usually keep my mouse off in some far corner of the screen, out of my way. Also, I decided to see what sort of challenges I was unlocking with all these keys I was collecting (by now I had gone through the first four or so of the green rooms), so I clicked on "main menu." When I got there, I discovered that none of my progress had been saved, that I couldn't access any challenges or resume my game where I had left off. This was of course very frustrating, so I must disappointedly say that I'm not going to finish the game. You should be proud anyway: this is some of the best stuff on newgrounds!