Peace Walker Missions
Peace Walker is built around a mission structure: Main Ops carry the story forward, Extra Ops are repeatable side/bonus missions, and Mother Base acts as your hub. This page explains the structure; exact mission lists and 2026-version details are being verified on the released build.
Quick answer
Missions in Peace Walker split into Main Ops (story) and Extra Ops (optional/repeatable missions). Completing missions earns ranks and recruits that feed Mother Base development, and many can be run in co-op.
Main Ops (story missions)
Main Ops form the core campaign and advance the story that turns 'Snake' into 'Big Boss'. They are the primary path through the game and gate the next story missions.
Extra Ops (optional missions)
Extra Ops are repeatable side missions — including grinding, special objectives and the Monster Hunter crossover hunts — that award recruits, items and development resources. They sit alongside the main story rather than replacing it.
Mission progression & ranks
Each mission is graded (S/A/B and so on). Better ranks reward more and feed faster development, making rank-based replays a core loop for players chasing 100%.
Mother Base & co-op
Recruits and resources from missions expand Mother Base, which unlocks new development and staff. Because missions support online co-op (up to 6 players per official materials), teambuilding is a first-class part of progression.
Master Collection 2026 status
Related guides
FAQ
Common questions about this topic.
What is the difference between Main Ops and Extra Ops in Peace Walker?
Main Ops are the story missions that advance the campaign; Extra Ops are optional, repeatable side missions for rewards and grinding.
How many missions are there in Peace Walker?
Exact counts on the 2026 Master Collection version are being verified and will be added to this page once confirmed.
Can Peace Walker missions be played in co-op?
Yes — missions support online co-op (up to 6 players per official materials). See the co-op guide.
Do mission ranks matter?
Yes — higher ranks (S/A/B) reward more and speed up development, so rank replays are part of completion.
Does the 2026 version change the mission list?
Any mission-list differences are being verified on the released build and will be noted here once known. Nothing is assumed.