Human Plug Medal Unlocks Sky9 mod Go to quick match and pick the Caverns stage then stand on top of the water for a few seconds.
Waterwings Medal Unlocks Bottomless Go to quick match then pick the Village stage go down to the bottom and crouch in the dirty water.
Embarassing Medal Unlocks Party Time Go to soldiers then to your commander class set the kill-streak to surge then go to quick match set the map to foundry and have 1 or more cpus (more is better) get your kill-streak then active it while you jump into the falling lava.
Detective Medal Unlocks Tin Man mod Go to campaign select the first mission after the chopper drops you off you to the right and lean against the black wall then crouch and keep walking right.
