yeah I though about making first level smaller, and put it just as a way to win weapons before the boss, but thought about it too late.
The level are randomly generated by taking a music, and create enemies wave from a defined list of possible enemies patterns.
(here: https://github.com/cosmo-ray/little-space/tree/little-mage/js/game_level).
I should have work a little more on patterns to make them more poetic and make more patterns to make them less repetitive.
I spend a lot of time during the jam on improving player bullets, adding a boss, a score system, and the munition system.