Halo 3 achievements

Halo 3

4.2 from 23134 votes

There are a maximum of 79 Halo 3 achievements (49 without DLC) worth 2,620 (1,750)

260,804 tracked gamers have this game, 18,340 have completed it (7.03%)

Achievement Details

Exterminator in Halo 3

Exterminator19 (10)

Score over 15,000 points in the Campaign meta-game on the fifth mission.

  • Unlocked by 69,676 tracked gamers (27% - TA Ratio = 1.93) 260,804  

Achievement Guide for Exterminator

50,653 (28,435)
Achievement won on 05 Oct 07
TA Score for this game: 2,620
Posted on 21 January 09 at 20:35
This solution has 62 positive votes and 2 negative votes. Please log in to vote.
The fifth mission is "Floodgate". The easiest way to unlock this achievement is to play the level on Normal difficulty with a few skulls turned on.

First and foremost, play with the "Catch" skull turned on. You only fight flood enemies in this level, and the flood don't throw grenades. Be wary though, because your elite allies will throw lots of grenades and they could end up killing you instead.

I would also recommend turning on "Tough Luck", "Fog", and "Famine". They will give your score multipliers but won't make completing the level much harder.

Try to stick to using the battle rifle for most of the level and use it to headshot the flood. Getting a headshot gives you a medal and will give you more points for the kill. At the beginning of the level, be sure to pick up the gravity hammer lying behind an upturned truck. Save it for when you're in tight situations or when you are out of battle rifle ammo.

NOTE: This achievement can also be unlocked in coop, but you still must score over 15,000 individually. Turn on Free For All scoring instead of Team scoring to be able to see how many points you yourself have while playing the level.
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