Planet 51

Easily obtained in the first section of the game “Suburbs” near the football field “lower middle section of the map”. Crash into a police car, and then enter the park area. Begin running over civilians, and shortly more police will come. On your compass the ALERT level is displayed. Once the fourth symbol is present “the ALIEN EYE, just like the achievement pic” appears start driving in a slow wide spread circle. This way you won’t loose your pursuers and lower the ALERT level. Do this for three minutes while the ALIEN symbol is present, and the achievement will unlock.