You are a goose with 20 hp and you need to protect yourself. A butterfly has 3 hp; the normal egg can deal 1 damage the golden egg 2 and the diamond egg 3 but it is a little bug that every egg can deal 3 damage
when I play, the goose doesn't seem to take damage and the only enemy that spawns is the butterfly, which die in 1 hit to the regular eggs. unless I'm somehow missing the damage/health mechanic