Left 4 Dead achievements

Left 4 Dead

4.2 from 14242 votes

There are a maximum of 65 Left 4 Dead achievements (50 without DLC) worth 2,866 (1,500)

176,226 tracked gamers have this game, 7,806 have completed it (4.43%)

Achievement Details

Mercy Killer in Left 4 Dead

Mercy Killer17 (15)

Survive the No Mercy campaign.

  • Unlocked by 132,924 tracked gamers (75% - TA Ratio = 1.15) 176,310  

Achievement Guide for Mercy Killer

A Wise Ninja
130,007 (80,661)
A Wise Ninja
Achievement won on 12 Jul 09
TA Score for this game: 1,107
Posted on 21 December 10 at 16:55
This solution has 11 positive votes and 2 negative votes. Please log in to vote.
For this achievement you must simply finish the campaign.
You do not have to necessarily play the whole campaign as you can join one in progress and still unlock the achievement. Please note that you can die countless times throughout but on the final sequence (when you have called for rescue) if you are killed you can no longer re-join.

If you are really struggling just select the easiest difficulty and play on single player, as there is no lag and the AI you play with can often spot infected that are nearly impossible to see.
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