The Riftbreaker Walkthrough — Start to Endgame

The Riftbreaker is a base-building survival game where you play as Captain Ashley Nowak in a powerful mech suit, establishing a base on the alien planet Galatea 37 to build a rift portal back to Earth. The game uniquely blends hack-and-slash ARPG combat (you personally fight alien hordes in your mech) with tower defense and base management. Your mech swaps between weapons in real-time while your base's automated defenses handle waves of alien attackers. Research new technologies across multiple alien biomes, manage power grids and resource chains, and hack through thousands of aliens. It's Factorio meets Diablo.

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 — Jungle

The starting biome with moderate alien threats and basic resources. The Jungle provides Carbonium and Ironium for initial base construction. Alien fauna here is manageable with starter equipment.

Level/Difficulty: Starting biome Key Rewards: Basic resources, starting base location, combat tutorial encounters

What to Do in Jungle

1. Learn base defense. Build walls, towers (gatling, laser, plasma, artillery), and traps to defend your base against periodic alien attack waves. Spend your first session getting comfortable with this.
2. Pick Mining Build as your starting build. It's the most forgiving option.
3. Walls and towers need overlapping fields of fire — place towers behind walls so they shoot over them, creating layered defense that enemies must pass through.
4. Acquire your first equipment upgrade — Minigun or whatever's available.
5. Clear all main content before moving on.

Phase 1 Checklist

• Understand base defense fundamentals
• Mining Build selected and functional
• Jungle main content cleared
• Ready for Desert

Phase 2: Early Game — Desert

A hot biome with sand-burrowing aliens and rare mineral deposits. Desert aliens attack from underground, requiring different defense strategies (no walls, sensor-based detection). Contains Cobalt for advanced electronics.

Level/Difficulty: Mid-game expansion Key Rewards: Cobalt, unique desert enemies, underground attack mechanics

What to Do in Desert

1. Work on mech suit. Your mech has 2 weapon slots (swappable in real-time), a dash ability, and special abilities. This system becomes critical from here on.
2. Farm for Minigun if you haven't already. It's the key upgrade for this phase.
3. Research new biomes before exploring them — biome-specific threats can destroy unprepared expeditions. Unlock appropriate resistances first.
4. Complete all objectives before pushing to Acid Biome.
5. Consider whether Combat Build might suit your playstyle better than Mining Build.

Phase 2 Checklist

• mech suit integrated into gameplay
• Minigun acquired
• Desert fully cleared
• Ready for Acid Biome

Phase 3: Mid Game — Acid Biome

A corrosive environment where acid pools damage structures and the mech. Acid-resistant building materials are required. Contains unique bio-materials for advanced research. The most hostile environment for base building.

Level/Difficulty: Mid-late game Key Rewards: Bio-materials, acid resistance tech, challenging base defense

What to Do in Acid Biome

1. Master resource extraction. Mine Carbonium, Ironium, Cobalt, Uranium, and rare materials from deposits across the map. This unlocks a new layer of gameplay.
2. Start working toward Plasma Sword. It's the best equipment and becomes accessible around now.
3. Nuclear power outperforms solar by midgame — once you have Uranium access, nuclear plants provide constant reliable power that solar panels can't match.
4. This area is the main skill check. If you can clear it, you're ready for late game.
5. Start investing in biome research for the tactical depth you'll need going forward.

Phase 3 Checklist

• resource extraction mastered
• Plasma Sword acquired or in progress
• Acid Biome fully cleared
• Ready for Volcanic Region

Phase 4: Late Game — Volcanic Region

Extreme heat, lava flows, and the most aggressive alien species. Volcanic resources include Uranium for nuclear power. The volcanic boss enemies are the toughest in the game.

Level/Difficulty: Late game Key Rewards: Uranium, nuclear technology, toughest alien encounters

What to Do in Volcanic Region

1. Finalize your build. You should be running Combat Build or Mining Build with optimized gear.
2. Plasma Sword should be your primary. If you don't have it yet, prioritize getting it.
3. Mech weapon switching is instant — swap between Flamethrower (crowds) and Railgun (heavies) mid-combat for optimal damage against mixed enemy waves.
4. portal building optimization starts here. Small improvements compound into massive advantages.
5. Farm this area for the resources needed to push into Tundra.

Phase 4 Checklist

• Build fully optimized
• Plasma Sword upgraded to max
• Volcanic Region fully cleared
• Ready for Tundra

Phase 5: Endgame — Tundra

A DLC frozen biome with blizzards and ice-adapted aliens. Cold affects mech performance and base power consumption. Contains crystalline materials for unique equipment.

Level/Difficulty: DLC content Key Rewards: Crystal materials, cold-specific challenges, DLC weapons and tech

What to Do in Tundra

1. Tundra tests everything. Come prepared with your best build and gear.
2. Horde waves come in escalating patterns — prepare between waves by rebuilding walls, restocking ammunition, and upgrading towers. Don't waste preparation time.
3. The endgame loop: run Tundra, optimize gear, push harder content.
4. Experiment with Balanced for a fresh take once you've mastered the standard builds.
5. This is where portal building mastery separates good players from great ones.

Phase 5 Checklist

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

Common Progression Mistakes

• Building defenses without power supply — towers and walls with active shields need power. A power outage during a wave means all defenses go offline.
• Ignoring ammunition supply — towers fire until ammo runs out, then become decorations. Build ammunition factories proportional to your tower count.
• Exploring new biomes without biome-specific resistance — acid biome corrodes your mech without acid resistance; volcanic biome overheats it without heat resistance.
• Spreading defenses too thin — concentrate defense at chokepoints rather than trying to wall off your entire perimeter. Focus resources on key approach routes.
• Not upgrading the mech between biomes — a mech equipped for Jungle aliens dies quickly in Volcanic regions. Upgrade weapons and defenses for each biome.

Key Tips for Smooth Progression

1. Walls and towers need overlapping fields of fire — place towers behind walls so they shoot over them, creating layered defense that enemies must pass through.
2. Research new biomes before exploring them — biome-specific threats can destroy unprepared expeditions. Unlock appropriate resistances first.
3. Nuclear power outperforms solar by midgame — once you have Uranium access, nuclear plants provide constant reliable power that solar panels can't match.
4. Mech weapon switching is instant — swap between Flamethrower (crowds) and Railgun (heavies) mid-combat for optimal damage against mixed enemy waves.
5. Horde waves come in escalating patterns — prepare between waves by rebuilding walls, restocking ammunition, and upgrading towers. Don't waste preparation time.

For detailed build optimization, see The Riftbreaker builds. For quick wins, check tips & tricks.