How to investigate the Anomaly, get out of there alive and extract the set of secret items - the Drum, MMA Gloves, Pristine Mirror and Perforated Target.

Easy mission guide for solo or squad completion of Act 4 Story (aka Tier 4 Story) Mission - Countermeasures - in Call of Duty Modern Warfare 3 Zombies mode.

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00:00 - Preparation
02:06 - Mission Start
02:41 - Obelisk #1: Perforated target
03:34 - Obelisk #2: MMA gloves
05:28 - Mission part 1 (escort)
09:57 - Mission part 2 (infested stronghold)
13:40 - Obelisk #3: pristine mirror
15:52 - Mission part 3 (outlast)
20:01 - Mission part 4 (boss)