Play Meowstone Siege for the first time.

Win 10 rounds in total.

Accumulate two hours of active play.

Win 50 rounds in total.

Win 100 rounds in total.

Build your first defense.

Purchase 10 defense upgrades in total.

Defeat your first boss.

Defeat 10 bosses in total.

Win a round without taking any castle damage.

Defeat 1,000 enemies in total.

Purchase the fourth command research tier.

Deploy your first helicopter or airplane.

Complete all 10 rounds of a daily siege.

Complete your first cat rescue mission.

Win a co-op wave with developer MrAgent; both players contribute damage.

Win a co-op wave with Jeff's beta-tester account; both players contribute damage

Win a co-op wave with the Carl; both players contribute damage