There are a maximum of 27 Halfway achievements worth 603
87 tracked gamers have this game, 4 have completed it (4.60%)
Complete all optional missions in one single play-through (progress resets when starting a new game).
Unlocked by 8 tracked gamers (9% - TSA Ratio = 3.29)
Do you have a question about this achievement? Please post it in the Halfway Forum