Arma 3 Walkthrough — Start to Endgame

Arma 3 is Bohemia Interactive's military simulation that has defined the milsim genre for over a decade. Set in the near-future Mediterranean, it offers unparalleled combined arms warfare across massive open maps with realistic ballistics, vehicle physics, and squad tactics. The game's longevity comes from its legendary mod support — community mods have created everything from Vietnam War scenarios to zombie survival to Star Wars conversions. While the Enfusion engine successor (Arma Reforger/Arma 4) exists, Arma 3 remains the most content-rich military simulator available, with thousands of workshop mods and an active multiplayer community in 2026.

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 — Altis

The primary 270 km² Mediterranean island with diverse terrain — towns, military bases, salt flats, dense forests, and mountain ranges. The most popular map for large-scale operations and persistent multiplayer modes like Antistasi.

Level/Difficulty: All skill levels Key Rewards: Largest vanilla map, most server variety, full combined arms

What to Do in Altis

1. Learn military simulation. Arma 3 simulates warfare at a level unmatched by other games. Spend your first session getting comfortable with this.
2. Pick Autorifleman as your starting role. It's the most forgiving option.
3. Install ACE, TFAR/ACRE, and CBA mods for the intended Arma 3 experience. Vanilla Arma is functional but these mods add critical depth to medical, communication, and weapon handling.
4. Acquire your first weapons upgrade — Katiba or whatever's available.
5. Clear all main content before moving on.

Phase 1 Checklist

• Understand military simulation fundamentals
• Autorifleman selected and functional
• Altis main content cleared
• Ready for Stratis

Phase 2: Early Game — Stratis

A smaller 20 km² island ideal for infantry-focused operations and learning the game. Concentrated terrain means engagements happen faster. Many training scenarios and beginner servers use Stratis.

Level/Difficulty: Beginner-Intermediate Key Rewards: Faster-paced gameplay, training scenarios, concentrated action

What to Do in Stratis

1. Work on combined arms warfare. Infantry, armor, artillery, helicopters, and fixed-wing aircraft all operate simultaneously on the same battlefield. This system becomes critical from here on.
2. Farm for Katiba if you haven't already. It's the key upgrade for this phase.
3. Use cover religiously. Arma's ballistic model means exposed soldiers die in 1-2 hits. Move between cover points, never cross open ground without suppression or smoke.
4. Complete all objectives before pushing to Tanoa.
5. Consider whether Rifleman might suit your playstyle better than Autorifleman.

Phase 2 Checklist

• combined arms warfare integrated into gameplay
• Katiba acquired
• Stratis fully cleared
• Ready for Tanoa

Phase 3: Mid Game — Tanoa

A tropical Pacific island with dense jungle vegetation and inter-island waterways. The Apex DLC map features the most challenging terrain for navigation and visibility. Jungle warfare favors close-range engagements and ambush tactics.

Level/Difficulty: Intermediate-Advanced Key Rewards: Jungle warfare, boat operations, Apex content, Pacific setting

What to Do in Tanoa

1. Master mod support. The Steam Workshop hosts over 70,000 mods for Arma 3. This unlocks a new layer of gameplay.
2. Start working toward MX Rifle. It's the best weapon and becomes accessible around now.
3. Learn the ACE medical system thoroughly: tourniquets stop limb bleeding temporarily, bandages fix wounds permanently, morphine manages pain, blood bags restore lost blood, epinephrine revives unconscious patients.
4. This area is the main skill check. If you can clear it, you're ready for late game.
5. Start investing in scenario editor for the tactical depth you'll need going forward.

Phase 3 Checklist

• mod support mastered
• MX Rifle acquired or in progress
• Tanoa fully cleared
• Ready for Livonia

Phase 4: Late Game — Livonia

A 163 km² Eastern European terrain with forests, farmland, and a contaminated zone. The Contact DLC map features the first-person shooter alien contact campaign. Dense forests create the best infantry combat terrain.

Level/Difficulty: All skill levels Key Rewards: Dense forests, Contact campaign, Eastern European setting

What to Do in Livonia

1. Finalize your build. You should be running Rifleman or Autorifleman with optimized gear.
2. MX Rifle should be your primary. If you don't have it yet, prioritize getting it.
3. Communication wins in Arma. Call out contacts with bearing, distance, and description: 'Infantry, bearing 045, 300 meters, in the treeline.' Vague callouts waste time and get people killed.
4. realistic ballistics optimization starts here. Small improvements compound into massive advantages.
5. Farm this area for the resources needed to push into Malden.

Phase 4 Checklist

• Build fully optimized
• MX Rifle upgraded to max
• Livonia fully cleared
• Ready for Malden

Phase 5: Endgame — Malden

A free 62 km² island based on the original Operation Flashpoint map. Nostalgic terrain with modernized graphics. Good balance of open fields and towns. The Combat Patrol mode uses Malden as its primary map.

Level/Difficulty: All skill levels Key Rewards: Free DLC, Combat Patrol mode, classic terrain

What to Do in Malden

1. Malden tests everything. Come prepared with your best build and gear.
2. Zeus mode (game master) is the best way to create memorable Arma experiences. One player controls AI spawning and objectives while others play the mission. No two sessions play the same.
3. The endgame loop: run Malden, optimize gear, push harder content.
4. Experiment with Engineer for a fresh take once you've mastered the standard builds.
5. This is where realistic ballistics mastery separates good players from great ones.

Phase 5 Checklist

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

Common Progression Mistakes

• Running and gunning like a regular FPS. Arma punishes aggressive movement with death. Move slowly, use cover, and think about your route before crossing open ground.
• Not learning keybindings. Arma has dozens of context-sensitive controls for stances, weapon resting, optic adjustment, and interaction. Spend time in the tutorials.
• Joining a milsim unit without understanding basic infantry tactics. Learn bounding overwatch, fire and movement, and contact drills before joining organized play.
• Ignoring the stamina system. Carrying too much weight means you can't sprint when it matters. Balance gear weight against mobility needs.
• Trying to fly helicopters in multiplayer without extensive practice. Physics-model helicopter crashes kill passengers and waste valuable team assets.

Key Tips for Smooth Progression

1. Install ACE, TFAR/ACRE, and CBA mods for the intended Arma 3 experience. Vanilla Arma is functional but these mods add critical depth to medical, communication, and weapon handling.
2. Use cover religiously. Arma's ballistic model means exposed soldiers die in 1-2 hits. Move between cover points, never cross open ground without suppression or smoke.
3. Learn the ACE medical system thoroughly: tourniquets stop limb bleeding temporarily, bandages fix wounds permanently, morphine manages pain, blood bags restore lost blood, epinephrine revives unconscious patients.
4. Communication wins in Arma. Call out contacts with bearing, distance, and description: 'Infantry, bearing 045, 300 meters, in the treeline.' Vague callouts waste time and get people killed.
5. Zeus mode (game master) is the best way to create memorable Arma experiences. One player controls AI spawning and objectives while others play the mission. No two sessions play the same.

For detailed build optimization, see Arma 3 builds. For quick wins, check tips & tricks.