The game was really fun to play and it looks really good. The scientists, claw, and little animations were all done really well and it really adds to the experience. The game also feels really smooth and easy to understand since it has few buttons, which makes it good for both newcomers and people who have more experience. Though the ability to only grab one of the scientists at a time made it quite hard.
There are a few things that do need work for this game jam specifically though. The idea of you being the villain is clear (since you're indiscriminately killing people) but I don't quite get the "blood is fuel" aspect. I see the large tank in the back slowly filling up, but I was able to grab (which was apparently supposed to consume blood?) without having to worry about it at all. Maybe having the tank drain instead of fill each time you use the grab would make it a little more clear that it's a precious resource, or something along those lines.
Overall I think the game is really well done and with a little more work would be really great. It's even more impressive for a game made in such a short time, and I could see this getting some attention.