Defeat your first boss. It's bigger, meaner, and not remotely impressed by your body count.

Defeat 5 bosses. They're evolving. Pity you're still better.

Defeat 25 bosses. At this point, they don’t fear extinction — they fear you.

Defeat 100 bosses. You’ve turned boss fights into routine exterminations.

Prove your worth—slaughter 150 zombies to earn your stripes.

Eliminate 2000 zombies. At this point, you're basically doing pest control.

Slay 500 zombies. If you’re still counting, you're not doing it fast enough.

Kill 5000 zombies. At this stage, you're not surviving — you're rewriting biology.

Kill 50,000 zombies. At this point, you're a myth whispered among the dead.