Really impressing!
It seems like a mixture of the combat style and violence of Madness Combat, but the graphic gore content reminds me of happy Treefriends. This might be because you use bears. But they flow nicley together.
The ending is ruther sudden, but you explained why, thank you. Without this explanation it would indeed have been confusing.
Your theme is actually heavy stuff. At first it seemd as if no matter what you do, it doesn't help to end the massacre. But you managed to create a good ending nevertheless.
One other positiv point is you blending of the introduction texts (like arte concepte etc.) with the surrounding, that I liked very much. A nice idea.
Altough it would have been great to have a drawn out ending, the total work is very nicle done. Good work.