it was pretty fun, made it to 15 days, probably could've done better but I'd say that was a decent run.
The upgrades are fun and silly, though I think it would be a great addition to have some kind of statistic feature where you can check the stats you currently have, since even though you get something like "+5% chance for egg to become chicks" you don't actually know what the means. is your base chance 0%, 5%, 10%? is it a 5% chance every second or is there an invisible timer that each chick has before a check is performed? This would greatly help plan ahead in which upgrade to buy since you know exactly what stat you have the most of and which stat you better of just ignoring, especially in the late game where you need to specialize since the majority of the income you get is required to pay off your debt.
beside that, I guess the usual roguelike features like curses (powerful upgrade that has a debuff), relics, or permanent upgrades (if you want it to be a rougelite instead) would be nice to have.