Echo Vein

Descend into the Echo Vein

Echo Vein is a 2D roguelike mining & combat game. You play as an operator – Bulwark, Pathfinder, or Borecaster – descending into procedurally generated caves to mine valuable resources, fight the Hollowborn, complete mission objectives, defeat the Sector Boss, and reach extraction before time runs out.

Every run makes you stronger through permanent upgrades, operator prestige, and milestone rewards.

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⛏️ Core Loop

1. Mine – Tunnel through destructible terrain to uncover Gild Shards, Voltarite, Echo Shards, and rare ores. Manage your tool's heat to avoid overheating.

2. Fight – Face 20+ enemy types with distinct behaviours, from charging beetles to teleporting void mites. Each run escalates with Hollow Pressure, spawning tougher foes.

3. Complete missions – Choose from Hunt, Survey, Harvest, or Holdout objectives. Each mission type changes your goal and reward multiplier.

4. Defeat the boss – Each sector has a unique boss (Hollow Tyrant, Hex Shard Colossus, or Molten Maw) with phase transitions and weak points.

5. Extract – Reach the extraction craft before the timer expires to bank your resources and progress.

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🛡️ Operators

| Operator | Role | Starting Weapon | Special |

|----------|------|-----------------|---------|

| **Bulwark** | Armoured DPS | Rotary Mauler | High HP, sustained fire |

| **Pathfinder** | Mobility | Vector Carbine | Faster dash, deployable traps |

| **Borecaster** | Mining Control | Thermal Lance | Better heat capacity, mining speed |

Each operator has its own **XP track** – reach level 20 to **Prestige** and earn permanent, stacking bonuses (HP, damage, speed, mining speed, heat capacity).

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💎 Key Features

- Persistent Progression – Permanent upgrades, 30+ milestones, and 8 synergies that unlock powerful combos.

- Run History – Your last 20 runs are saved, with best runs tracked for kills, extraction speed, resources, operator level, and depth.

- Adaptive Performance – The game dynamically adjusts enemy spawns and VFX to maintain smooth framerates.

- Full Gamepad Support – Play with keyboard/mouse or any modern controller.

- Procedural Caves – Every run generates a new cave with resource veins, lava rocks, and open chambers.

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🎮 Controls

| Action | Keyboard | Gamepad |

|--------|----------|---------|

| Move | WASD / Arrows | Left Stick |

| Dash | Space / Y | Y |

| Primary Fire | LMB | X |

| Arc / Secondary | RMB | B |

| Place Trap | E | A |

| Pause | P | – |

| Restart Run | R | – |

| Mute | M | – |

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🔧 Development

Echo Vein is developed by King Peng Studio. The game is built with HTML5, Canvas 2D, and Web Audio – playable directly in your browser.

*Made with ❤️ by Alessandro and Dylan.* #roguelike #action #procedural #exploration #boss