Got a bug, when picking a weapon to replace with your new one they all show as level 2. Also some weirdness with the radio waves, the projectile count seems to be going up with every wave? And now that I've picked it as a starting weapon after a lengthy run with it I've started with it shooting 16 projectiles instead of the 5 it used to, is that tied to the total number of upgrades you have or something?
The early game is really weak right now, when you have only one weapon and it's at level 1 you're pretty screwed with most of the weapons. As others said, the circling weapons are waaaaay too slow. Plasma, prod and static field suffer from the way the controls force you to always keep going forward which makes it super easy to run into enemies by accident, they're somewhat workable but you'll likely take a lot of unnecessary damage simply because you have to take that risk just to attack. The pea shooter and radio waves are just by far the safest starting option since they don't require you to move into danger.