Got some great streamers to play my game today (thanks to https://twitch.tv/ursagames and https://twitch.tv/elysiagriffin), and a lot of great feedback on my page. I posted an update to my game. You can grab it on https://jamish.itch.io/ground-0!

Lots of small changes, like making it more obvious when the boss is impervious to damage:

Version 1.1 * Gameplay Changes * Bullets now bounce off the boss when you deal no damage, making it more obvious when it's invincible * Boss bullets move slower (20% speed reduction) * Your bullets can destroy enemy bullets * Visual Changes * Enemy corpses are now transparent/darker, and will always render behind other enemies/bullets, improving visibility. * Enemy explosions render behind other enemies/bullets, improving visibility. * Bug Fixes * Hoppers no longer move sideways when you pull the dirt out from under them * Fixed a rare crash when you die in the same frame that an enemy spawns * Miscellaneous * New pause/quit menu accessible at any time by pressing Escape * Game window is now resizable * Both Windows and Mac build are now built with GameMaker Studio 2

(Note: I left my original offical LD42 submisson on my LD page)