This is a pretty cool game! I love the gameplay and especially how you chose to implement the theme. I like how the characters are droplets (or look like droplets), I feel like that goes very perfectly with the needle.
A few suggestions though— when the enemies collide with the player, things seem to get slower a bit. Also, when you start the game, you start straight inside the level. For games with action, like this one, it's a good idea to start off with a game menu or splash screen of some sort. It's also hard to tell who's your enemy and who's not after using necromancy, I noticed a difference in their heads, but having your teammates as a different color than white would stand out more.
Overall though this is impressive for something made in a small amount of time, this game is fun!