MX vs. ATV Reflex

You can get this achievement in any of the three free ride maps: Hillsgrove, NY; Reyes, AZ; and Icarus, MT.

You will probably get it in Hillsgrove, as it's the first available map and getting a gold medal isn't very hard.

There are four challenges you can do:

- Discovery: you have to find three blue flags scattered across the map.

- Target Practice: you have to jump through a series of targets (X's) within a time limit.

- Trailblazer: you have to reach a destination within a time limit

- Hill Climb: you have to ride up a steep hill a certain distance.

Any of these challenges will net you the achievement. If you are having trouble getting a gold on the last three challenges, then just do the discovery one--find three flags.

Here are the locations for the three flags in Hillsgrove:

- The middle-right side of A-1. It's on the ground level in the foggy area.

- The bottom-right corner of C-4. It's on top of the huge hill.

- The middle-bottom side of E-1. It's on the largest island, the one that is connected by a thin strip of land.

Below is a great video by Josh7199 to find all three flags in Hillsgrove.