Inversion achievements
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There are a maximum of 50 Inversion achievements worth 3,580 (1,000)

5,886 tracked gamers have this game, 47 have completed it (0.80%)

Achievement Details

Rock Hard in Inversion

Rock Hard200 (75)

This is a rare achievementFinish the Campaign on High Gravity Difficulty

  • Unlocked by 823 tracked gamers (14% - TA Ratio = 2.67) 5,886  

Achievement Guide for Rock Hard

AuthorSolution
The AuD Doc
196,150 (105,495)
The AuD Doc
Achievement won on 11 Jun 12
TA Score for this game: 2,509
Posted on 24 June 12 at 20:47, Edited on 01 July 12 at 21:31
This solution has 11 positive votes and 0 negative votes. Please log in to vote.
This can be achieved by completing the game on Normal or Easy, co-op or single player, then going back and replaying the last checkpoint of each chapter on Hard. If you are doing co-op and one player has already completed the game, the player that has completed it can load each checkpoint and you should get all three difficulty cheeves once every chapter is done as well as the co-op ones.

Without using the checkpoint glitch, this isn't too hard by yourself for your first and only run through. Although Leo, the AI, is pretty useless and it would be much easier with another player.
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