Haha, I think the crash is inevitable if you keep upgrading, and enemies keep spawning. Eventually there's just so much going on that a browser bases game is doomed to crash. I'm hoping that I can balance the gameplay in a way where it wont get THAT insane, but still allow you a fun degree of insanity. If you'd be interested in revisiting the game after I make some major updates, throw me a follow to get update notifications.
PS Love your avatar. Some of my working names for the game were Pirate King and One Pirate lol. I might still change the name after the jam.