half way to hell achievement

ok im new to this thread thing but i just wanted to know if any one else had this problem.i unlocked the achievement for beating the game on supersoldier diffuculty but did not got the half way to hell achievement did i miss something or is it glitched

I'm in the opposite boat why the hell can crytec make a great looking game and there programmers be complete idiots?This is bull i mean after crysis 2 they should of learned there lesson.

RockstarELITEXX said:It's a known glitch, and its happening to a lot of people. However, you got yours the good way around. Better this way, than not popping the final SS achievement for completing the game.

To get around it, transfer your save to a USB stick (so essentially your deleting your save), and replay the first three chapters. It should unlock.

Would u say this works for the ss full playthru as well I'm going to give it a shot also it glitches me a upgrade and I can't find extended mags upgrade for the shotguns any tips on those?

It works like a charm if you don't get it the first time move ur stuf to a usb and start from scratch and presto got my achievement.