Thanks for the Just Cause 2 guide. It helped me a lot.
I just wanted you to know that the latest patch that fixed the Vanderbuilt Leisure Liner problem also changed a couple of Achievement pictures. The pictures from Halfway There and Perfectionist now picture the map of Panau with an 50% and 75% symbol respectively. These pictures seem to fit the achievements more than two cars and a sniper rifle. Players that earned the achievements before applying the patch will keep the old pictures on their profile and those who got them after the patch will display the new ones. Or one of each, in my case. Visiting your profile on XBox.com will show the newest pictures for both achievements.