Impressive contribution considering the one week time limit !
You did some very interersting puzzles here, so each little children were fun to find (the "please help me" voice acting was oscar worthy x) )
The design is cool, and the music too (even though it maybe little bit too high in frequency sometimes :/)
As idea to improve, I think it would have been better to remove the combat mechanic. As enemy are long to kill, they would have been better as just obstacle you have to avoid while pressing the space bar to keep the children. This is really my opinion here, maybe you had other ideas you wantd to add ? :)