Here is the full list of all 20 AREA 51 - there are DEFENCE achievements.
Stop 10 naruto-runners.
Stop 20 naruto-runners.
Stop 30 naruto-runners.
Stop 40 naruto-runners
Stop 50 naruto-runners.
Stop 60 naruto-runners.
Stop 70 naruto-runners.
Stop 80 naruto-runners.
Stop 90 naruto-runners.
Stop 100 naruto-runners.
Stop 110 naruto-runners.
Stop 120 naruto-runners
Stop 130 naruto-runners
Stop 140 naruto-runners
Stop 150 naruto-runner
Stop 160 naruto-runner
Stop 170 naruto-runner
Stop 180 naruto-runner
Stop 190 naruto-runner
Welcome to the Area 51!