- Operation Completion
Halo 4: Complete a Spartan Ops mission.
- Departure
Halo 4: Complete all chapters in Spartan Ops Episode 1.
- Artifact
Halo 4: Complete all chapters in Spartan Ops Episode 2.
- Catherine
Halo 4: Complete all chapters in Spartan Ops Episode 3.
- Didact's Hand
Halo 4: Complete all chapters in Spartan Ops Episode 4.
- Memento Mori
Halo 4: Complete all chapters in Spartan Ops Episode 5.
- Scattered
Halo 4: Complete all chapters in Spartan Ops Episode 6.
- Invasion
Halo 4: Complete all chapters in Spartan Ops Episode 7.
- Expendable
Halo 4: Complete all chapters in Spartan Ops Episode 8.
- Key
Halo 4: Complete all chapters in Spartan Ops Episode 9.
- Exodus
Halo 4: Complete all chapters in Spartan Ops Episode 10.
- Feet First
Halo 4: Complete all Spartan Ops chapters.
2 guides
- Term of Enlistment
Halo 4: Complete all Spartan Ops chapters on Normal difficulty.
- Hazard Pay
Halo 4: Complete all Spartan Ops chapters on Heroic difficulty.
- Icarus
Halo 4: Complete all Spartan Ops chapters on Legendary difficulty.
2 guides
- Smooth Operator
Halo 4: Complete all Spartan Ops chapters solo on Legendary difficulty.
4 guides
- Roses vs Violets
Halo 4: Why are you even here?
5 guides
- No One Left Behind
Halo 4: Save at least one Marine on Hacksaw (Ep.2 Ch.3) of Spartan Ops on Heroic or Legendary.
5 guides
- Knight in White Assassination
Halo 4: Assassinate a Knight in any Spartan Ops mission.
4 guides
- What Power Outage?
Halo 4: Complete The Cauldron Base of Spartan Ops without losing a generator on Heroic or Legendary.
- No Easy Way Out
Halo 4: Survive Spartan Miller (Ep.5 Ch.1) of Spartan Ops on Heroic or Legendary.
3 guides
- Nice Work Dawg!
Earn a total of 2,500 Assist medals in multiplayer.
8 guides
- Aim for the Head
Earn a total of 2,500 Headshot medals in multiplayer.
9 guides
- Dim Mak
Earn a total of 250 Beat Down medals in multiplayer.
4 guides
- Domination
Earn a total of 100 Legendary medals in matchmade games.
9 guides
- Double Trouble
Earn a total of 250 Double Kill medals in matchmade games.
4 guides
- Spree Master
Earn a total of 100 Killing Spree medals in matchmade games.
3 guides
- Catch This
Earn a total of 500 Grenade Kill or Plasma Kill medals in matchmade games.
8 guides
- Party Pooper
Earn a total of 250 Killjoy medals in matchmade games.
9 guides
- Planting A Flag
Earn a total of 250 CTF Mode Specific medals in matchmade games.
4 guides
- The True King
Earn a total of 250 KOTH Mode Specific medals in matchmade games.
3 guides
- Roadkill Rampage
Halo 2A MP: In Anniversary matchmaking, earn a total of 100 Splatter medals.
10 guides
- Rock and Coil Hit Back
Halo 2A MP: In Anniversary matchmaking, earn a total of 100 Environmentalist medals.
8 guides
- No Pain, No Gain
Complete 1 mission with the LASO playlist skulls enabled.
4 guides
- Airborne
Halo CE: Launch a Warthog for at least 5 seconds and have it splatter an enemy.
9 guides
- Assembly Skull
Halo 3: Find the hidden Skull on the Assembly multiplayer map.
4 guides
- Orbital Skull
Halo 3: Find the hidden Skull on the Orbital multiplayer map.
4 guides
- Sandbox Skull
Halo 3: Find the hidden Skull on the Sandbox multiplayer map.
7 guides
- Citadel Skull
Halo 3: Find the hidden Skull on the Citadel multiplayer map.
6 guides
- Heretic Skull
Halo 3: Find the hidden Skull on the Heretic multiplayer map.
5 guides
- Longshore Skull
Halo 3: Find the hidden Skull on the Longshore multiplayer map.
4 guides
- Brainpan
Halo 3: Find all the hidden multiplayer Skulls.
4 guides
- Sightseeing
Halo CE: Complete a match on at least 8 different classic multiplayer maps.
4 guides
- Checking Out Your Options
Halo CE: Complete a match on at least 4 unique game types.
6 guides
- Tourist
Halo 2: Complete a match on at least 8 different classic multiplayer maps.
- Window Shopping
Halo 2: Complete a match on at least 4 different game types in classic multiplayer.
3 guides
- World Traveller
Halo 3: Complete a match on at least 8 different multiplayer maps.
3 guides
- Just Browsing
Halo 3: Complete a match on at least 4 different game types in multiplayer.
2 guides
- Going International
Halo 4: Complete a match on at least 8 different multiplayer maps.
2 guides
- Taste Test
Halo 4: Complete a match on at least 4 different game types in multiplayer.
2 guides