BioShock 2 (PC) achievements
2,901
(1,380)

BioShock 2 (PC)

4.1 from 646 votes

There are a maximum of 68 BioShock 2 (PC) achievements (50 without DLC) worth 2,901 (1,380)

7,272 tracked gamers have this game, 233 have completed it (3.20%)

Achievement Details

Secret Achievement in BioShock 2 (PC)

Secret Achievement26 (20)

Continue playing to unlock this secret achievement. (Secret)

  • Unlocked by 4,388 tracked gamers (60% - TA Ratio = 1.28) 7,272  

Achievement Guide for Unbreakable

AuthorSolution
Tufty94
150,480 (94,515)
Tufty94
Achievement won on 12 Sep 10
TA Score for this game: 1,108
Posted on 20 July 11 at 18:49
This solution has 2 positive votes and 0 negative votes. Please log in to vote.
To unlock this you must kill a Big Sister without being killed. I doesn't have to be the first one that you encounter, it can be any.

You encounter the Big Sisters when you deal with the final little sister in the area, you can harvest then or save them, it doesn't make a difference.

Before you start the fight with the Big Sister make sure you stock up on full health kits, Eve Hypos and drill fuel. It would also help if you upgraded you drill before going into the fight.
If you have any money left then stock up on ammo for your other weapons. You should also lean the lunge move with your drill.

I just zapped the sister using the Electric plasmid and then lunging at the with the drill. This inflicts massive amounts of damage. You should kill her by the time you run out of fuel and Eve, but just in case you do just shoot her from a distance with whatever you have ammo for.
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