Just finished, and I have to say, absolutely incredible game. The imagery, tightly tuned, breath-taking chase sequences, atmosphere, animations, and overall polish really put this game ahead of whatever competition you may find for it. ESPECIALLY the animations. I thought they were incredible, and then I saw how fluid the blob was...seriously blew me away. The game's world and atmosphere would have already kept my attention on its own merits, but the animation work really left me immersed for every single second of the entire experience.
Any time I would get distracted, or feel a pacing issue (I felt the first large-scale mind control area was a bit long in comparison to the average section of the game. Nothing major though), some small quirk about how your character interacts with the world would pull me right back in, whether it be the way he drops from upside down water, scrambles to keep himself up after the floor collapses beneath him, or gets slightly lower to the ground to run faster as enemies come within distance. I don't think I've seen anything of this quality in any game I've played, ever, and I was thinking that BEFORE the blob section. Serious props to the animation team.
On another note, I have no idea what this game is about. I don't know if the incubation tank was keeping the blob alive, so I don't know if the boy was trying to kill it, knowing this, or free it. It also doesn't seem like he willingly became a part of it, seeing as he was dragged into it. Allows for a few explanations of your motives as the character.
The final section played out perfectly, as well. At first, panic, as you frantically mow down people in the labs, cafeteria, and other areas. Then, a few reluctantly help you (the guy who opens the keypad door was obviously very scared of you). Then the help gets a bit more comfortable, with people throwing you boxes, etc. Just as you stop questioning their help, they lure you on a sliding panel and trap you. It was very natural, and paced perfectly to influence your emotions about the situation. Brilliant stuff.