It's really hard until you get the right upgrades, then it gets significantly easier. :)
I managed to survive around 1 minute, using the rapid fire or spread shot.
The enemies seem uncomfortably happy to kill you, by the way. :D
What can I say? The enemies really enjoy their work.
Thanks for playing. It definitely gets challenging fairly quickly. Glad the upgrades made it easier!
Not a lot of time to tweak the design and change balancing in the jam, but that was the intended difficulty curve. Glad it worked out.