Ok, a cycle is as Lawl PwNeD described. However, for this achievement your team (collectively) has to hit for the cycle. So as long as you have at least 1 single, double, triple, and home run - regardless of who hit them or in what order - then you unlock the achievement.
I would also recommend that you try the Chicago neighborhood as extra base hits are easy to come by. Hitting the ice cream truck/van, bouncing the ball over the fence, or bouncing into the back three houses will net you a double. Hitting the red garage doors on the back left and back right houses or hitting the houses on the fly will net you a triple. Needless to say, a home run is awarded when you knock the ball over the houses and fence in the air.
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