Metal Gear Survive achievements

Metal Gear Survive

3.4 from 149 votes

There are 51 Metal Gear Survive achievements worth 5,445 (1,000)

6,919 tracked gamers have this game, 26 have completed it (0.38%)

Achievement Details

Secret Achievement in Metal Gear Survive

Secret Achievement106 (15)

Continue playing to unlock this achievement. (Secret)

  • Unlocked by 138 tracked gamers (2% - TA Ratio = 7.06) 6,923  

Achievement Guide for Secret Achievement

425,940 (236,956)
Achievement won on 24 Feb 18
TA Score for this game: 3,662
Posted on 24 February 18 at 03:37, Edited on 04 April 18 at 17:27
This solution has 7 positive votes and 0 negative votes. Please log in to vote.
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After beating the main story you can randomly find a red circle on the Dite map that says "powerful enemy detected". If you go there you'll find an enemy called Big Mouth. One of his attacks has him try to bite you. If that attack hits an explosive barrel gadget he'll eat it, take damage, and you'll get this achievement.

Some tips for fighting him. If you are using the scout subclass the stealth ability and fox step ability will let you easily clear all the basic wanderers in the arena and place some barrels. A purple shotgun with about 70 rounds should be enough to kill him. His first phase is pretty easy if you don't have any additional enemies, just hide behind a pillar in the arena and when he's not shooting you can pop out and shoot him a bunch. After he staggers from the shotgun he'll usually try a bite attack so you can place a barrel at this time if one isn't nearby. His second phase is a bit harder since his attack is a bit more instant but you can use the cloak to get in free hits and then hide while waiting for it to recharge.

Explosive Barrel can be found North of teleporter 9 on the main map. Following the bounds of the map on the east side it should be the second container north of that teleporter on the attached map.

No longer missable since boss can spawn in daily/weekly missions.

Addendum: As of most recent patch (4/3/2018) boss side missions now reappear in single player and can appear in new areas. Just refought bigmouth on FOB map half way between T6 and T7.
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