There are a maximum of 33 Half-Life 2 achievements worth 505
6,551 tracked gamers have this game, 1,220 have completed it (18.62%)
Keep Off the Sand!21
Cross the antlion beach in chapter Sandtraps without touching the sand.
Unlocked by 1,540 tracked gamers (24% - TSA Ratio = 2.06)
Do you have a question about this achievement? Please post it in the Half-Life 2 Forum