I agree that there should be more reasons to kill the ants and some nice progression (more abilities, enemy types, better rewards).
I did want to add one boss when you reach max level but I didn't have enough time (over scoped as this is my first jam, and had to cut down things). I've updated the description on the page to have the basic description on how someone can win/lose and the controls.
Thank you for trying my game and giving feedback! I will also try your game (Also has ants, nice!) and give feedback later today/tomorrow when I get some free time.