This is my kind of "cozy" game :))
I like the idea of being an immortal being and just toasting little guys. Now, the game clearly needs a bit of polish. The laser hits don't always seem to register. When the little guys go down ragdoll them or blow them up. I wanna feel that impact :). The screaming is hilarious but it's repetitive. You can use a quick hack by adding a random pitch offset to give it some variety.
I would like to see this polished up and turned into a full game. Well done.