Thank you so much for taking the time to leave a comment, daichifob.
I wanted to do an AOE force-push with right mouse button for when you get in sticky situations but had to drop it in favour of closing the loop.
Shooting multiple enemies at once is a great idea (and I like the idea of pickups around the arena to give the player more purpose in movement) but that'd create an issue in the late game. It'll require some thought on how to make both ideas work!