This is a quick guide for Halo: The Master Chief Collection’s “Why So Serious” achievement which provides five Gamerscore when completed. This challenge requires you to “View the smiling face in the classic multiplayer map Coagulation.”
To do so you’ll need to head to custom games, then select Halo 2 Classic, and then choose Coagulation as the map. Load in whatever gametype, slayer is probably the easiest. For this one you’ll over to the red team base. There are three rocks in front of the base, these are large and hard to miss. Head within them, the rock at the far back towards the large planet in the sky has a face on it. Shoot this as it’s the special thing you’re looking for.
It may take a few seconds to unlock, but it’s fairly straight forward. You can see a screenshot below, or check out our video below at the (5:02) mark for a more visual assistance. Read our review of Halo: MCC below, or check out the general franchise hub for additional coverage.
Read our Halo MCC Review
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