Cant Save Them All

You have lived among humans for decades. But the ancient evil strikes once more. You take out your weapon. A Bloodthirsty Scythe. Will You save the people? Or slaughter them all...? 2D game, where you have to protect people from monsters. Yet, since You are a vampire, you need human blood to use Your full potential. How many will you sacrifice? Use WSAD to move, and LMB to attack.