Update ideas:
Money and ammo rework:
I think it would be cool if the fishes (money) were used to shoot the enemy slimeows, not talking a big amount of loss but like 5 fish for ammo (price (fish) does not increase with the veteran upgrade (the veteran upgrade simply increases the amount of fish (ammo) you get for the 5 fish (money)).
A system for the grooming feature:
Cats will need to spend time grooming (to relax?), and therefore will not be able to work, maybe an upgrade could decrease the grooming time.
Fish reward upgrade:
Name should explain itself, but maybe an expensive upgrade that increases fishes (money) worth.
My opinion of the current game:
I like it, but maybe its a bit too simple (as shown by my ideas for changes seen above), and I'd like to see some more complexity to it, other than that, I quite like it, though later on, when stuff gets very expensive, everything kinda gets slowed down, and then I kind of lose interrest in the game.
Yes i know this is a Ludum Dare game jam, does not mean it can't be made into a bigger game.