Originally Posted by TheMovement81
Not sure what the deal is with all these buggy achievements as we've seen different situations pop the achievement and others don't. My first time thru MK1, I started as Sub-Zero, playing on normal/medium used plenty of continues and various characters, failed 1 of the 3 test your mights, but ended up finishing the game as Sub-Zero and the achievement did actually pop for me.
It would be nice to know though if there are certain conditions that need to be met or if the cheevos are truly random and glitchy.
Based on every person's post in this forum, there doesn't seem to be any specific requirements. Everyone has and has not unlocked the achievements under vice versa circumstances. So as of now it is simply glitched. Just keep beating the game until it pops. This is the only solution until a patch is released.