I’m really glad you liked the game and its art, and especially that it got you hooked hahah. About the difficulty, you’re absolutely right — I was adding content until the very last minute of the jam, and due to lack of time there are things I would’ve liked to polish, like the long-term gameplay.
Most likely, making it so that each time Birdnessman requires more points to appear, or that simply redeeming upgrades costs you a certain amount of points, would make it more interesting.
Thank you so much for your comment and for playing my game, rest assured I’ll take it into account for a future update <3