Fallout 4 Walkthrough — Start to Endgame

Fallout 4 is Bethesda's open-world action RPG set in a post-nuclear Boston (the Commonwealth) where you emerge from a cryogenic vault 210 years after the Great War to find your kidnapped son. The game features an extensive perk system, base-building settlements, companion relationships, and four faction endings that dramatically alter the Commonwealth. With its modding community and ongoing DLC content (Far Harbor and Nuka-World), Fallout 4 offers hundreds of hours of exploration and combat.

This walkthrough takes you from your first session to endgame content. Each phase has specific goals, priorities, and milestones. Follow this path to avoid common traps that stall most players.

Quick Progression Summary

Phase 1: Getting Started — Diamond City

The main settlement built inside Fenway Park. Contains key NPCs (Piper, Nick Valentine), multiple shops, a doctor, and access to main story quests. The closest thing to a safe hub in the Commonwealth.

Level/Difficulty: Level 10+ (recommended) Key Rewards: Piper companion, Nick Valentine access, vendors, home plate

What to Do in Diamond City

1. Learn VATS targeting. VATS (Vault-Tec Assisted Targeting System) pauses time and shows hit percentages for each body part. Spend your first session getting comfortable with this.
2. Pick Heavy Gunner as your starting build. It's the most forgiving option.
3. Charisma 6 unlocks Local Leader, which lets you build supply lines and shops in settlements. This single perk transforms settlement gameplay.
4. Acquire your first equipment upgrade — Deliverer or whatever's available.
5. Clear all main content before moving on.

Phase 1 Checklist

• Understand VATS targeting fundamentals
• Heavy Gunner selected and functional
• Diamond City main content cleared
• Ready for Goodneighbor

Phase 2: Early Game — Goodneighbor

The Commonwealth's seedy underside — a settlement run by ghouls and outcasts. Home to Hancock (companion), the Memory Den, and the Silver Shroud quest. More interesting NPC interactions than Diamond City.

Level/Difficulty: Level 15+ Key Rewards: Hancock companion, Memory Den quests, unique vendors, Silver Shroud quest

What to Do in Goodneighbor

1. Work on settlement building. 30+ settlements can be built with structures, defenses, resources, and shops. This system becomes critical from here on.
2. Farm for Deliverer if you haven't already. It's the key upgrade for this phase.
3. Scrapper perk (Intelligence 5) tags components when scrapping weapons, highlighting where to find rare materials like screws, adhesive, and nuclear material.
4. Complete all objectives before pushing to The Glowing Sea.
5. Consider whether Stealth Sniper might suit your playstyle better than Heavy Gunner.

Phase 2 Checklist

• settlement building integrated into gameplay
• Deliverer acquired
• Goodneighbor fully cleared
• Ready for The Glowing Sea

Phase 3: Mid Game — The Glowing Sea

The irradiated crater from the nuclear bomb that hit the Commonwealth. Extremely hostile with high radiation, Deathclaws, and Radscorpions. Requires Power Armor or heavy Rad resistance. Contains Virgil's cave (main story critical) and rare loot.

Level/Difficulty: Level 25+ (Power Armor required) Key Rewards: Virgil quest progression, X-01 Power Armor spawn, rare legendary drops

What to Do in The Glowing Sea

1. Master companion affinity. 13 companions each have likes and dislikes that affect their affinity toward you. This unlocks a new layer of gameplay.
2. Start working toward Overseer's Guardian. It's the best equipment and becomes accessible around now.
3. Power Armor uses Fusion Cores as fuel — each lasts about 20 minutes of real time. Cores are found throughout the Commonwealth and can be purchased. Sprint drains cores 10x faster.
4. This area is the main skill check. If you can clear it, you're ready for late game.
5. Start investing in power armor for the tactical depth you'll need going forward.

Phase 3 Checklist

• companion affinity mastered
• Overseer's Guardian acquired or in progress
• The Glowing Sea fully cleared
• Ready for Institute

Phase 4: Late Game — Institute

The hidden underground facility of the game's most advanced faction. Accessed during the main story. Pristine white labs, synth production, and the truth about your son. Your choices here determine the game's ending.

Level/Difficulty: Main story progression Key Rewards: Main story progression, Institute weapons/armor, faction choice

What to Do in Institute

1. Finalize your build. You should be running Stealth Sniper or Heavy Gunner with optimized gear.
2. Overseer's Guardian should be your primary. If you don't have it yet, prioritize getting it.
3. Companions can't die, only get downed. Use them as tanks by giving them Power Armor (no Fusion Core required for companions) and heavy weapons.
4. perk chart optimization starts here. Small improvements compound into massive advantages.
5. Farm this area for the resources needed to push into Far Harbor.

Phase 4 Checklist

• Build fully optimized
• Overseer's Guardian upgraded to max
• Institute fully cleared
• Ready for Far Harbor

Phase 5: Endgame — Far Harbor

A DLC island off the coast of Maine with fog, Trappers, and a conflict between three factions. The best Fallout 4 story content with meaningful choices. Contains unique weapons, armor, and the Nucleus (Children of Atom base).

Level/Difficulty: Level 25+ (DLC) Key Rewards: Best story DLC, unique weapons, faction quests, new settlement locations

What to Do in Far Harbor

1. Far Harbor tests everything. Come prepared with your best build and gear.
2. Water purifiers in settlements generate purified water that's deposited in the workshop. Excess water can be sold for easy caps — build Industrial Water Purifiers at Spectacle Island.
3. The endgame loop: run Far Harbor, optimize gear, push harder content.
4. Experiment with Explosives Expert for a fresh take once you've mastered the standard builds.
5. This is where perk chart mastery separates good players from great ones.

Phase 5 Checklist

• Endgame content on farm
• Best-in-slot gear acquired
• Far Harbor fully cleared
• Ready for challenge content

Common Progression Mistakes

• Entering the Glowing Sea without Power Armor or Rad-X — radiation there is lethal. Even with Rad-X, you'll take constant damage. Full Power Armor with a lead-lined helmet is recommended.
• Ignoring settlement defense ratings — undefended settlements get raided and lose resources. Build turrets and assign settlers to guard posts.
• Selling Fusion Cores — they're essential for Power Armor and expensive to buy back. Hoard every Fusion Core you find.
• Choosing a faction ending without saving first — each faction ending destroys the others permanently. Save before committing to the Institute, Brotherhood, Railroad, or Minutemen path.
• Not picking up Junk items — literally everything in the world breaks down into crafting components. Desk fans give screws and gears, phones give copper and crystal. Grab everything.

Key Tips for Smooth Progression

1. Charisma 6 unlocks Local Leader, which lets you build supply lines and shops in settlements. This single perk transforms settlement gameplay.
2. Scrapper perk (Intelligence 5) tags components when scrapping weapons, highlighting where to find rare materials like screws, adhesive, and nuclear material.
3. Power Armor uses Fusion Cores as fuel — each lasts about 20 minutes of real time. Cores are found throughout the Commonwealth and can be purchased. Sprint drains cores 10x faster.
4. Companions can't die, only get downed. Use them as tanks by giving them Power Armor (no Fusion Core required for companions) and heavy weapons.
5. Water purifiers in settlements generate purified water that's deposited in the workshop. Excess water can be sold for easy caps — build Industrial Water Purifiers at Spectacle Island.

For detailed build optimization, see Fallout 4 builds. For quick wins, check tips & tricks.