First Three Dungeons — Gear Check, Boss Mechanics & Loot Tables

Dungeon Progression Path

Dungeons unlock in sequence. Each requires gear from the previous:

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1. Rust Cavern — Entry Level

Recommended Gear: Stone armor, iron sword (18+ damage), 3 healing salves Time Limit: None (mobs don't respawn) Difficulty: Easy

Dungeon Map

The Rust Cavern is a linear tunnel with two large chambers and a final boss room.

Entrance → Guard Room → Main Cavern → Narrow Passage → Boss Chamber → Exit (shortcut back)

Enemy List

Enemy	HP	Damage	Count	Drops
Rust Mite	15	3	8	Chitin ×1
Corroded Walker	80	10	4	Scrap Metal ×2
Spore Blob	30	5 (AoE)	3	Toxic Sludge ×1

Boss: The Corroded Core

HP: 350 | Damage: 15 (melee), 8 (AoE pulse)

Phase 1 (100%-60% HP):
- Slow melee swings (easy to dodge)
- Every 4th hit releases an AoE pulse — back away
- Strategy: hit 3 times, dodge backward, repeat

Phase 2 (60%-0% HP):
- Gains charge attack (telegraphed by 2s glow)
- Spawns 2 Rust Mites on each pulse
- Strategy: kill mites first, then resume DPS
  (mites explode after boss death, dealing 20 damage)

TIP: The Corroded Core's AoE pulse has a visual indicator — the ground cracks in a 3-tile radius. The moment you see cracks, press dodge. Frame-perfect dodge nullifies all damage.

Drop Table

Item	Drop Rate	Notes
Circuit Board Blueprint	100%	Quest reward
Scrap Electronics	80%	Crafting material
Rusted Key	30%	Opens hidden cache in Main Cavern
Core Fragment	15%	Used in Tier-2 weapon upgrade
Corroded Core Blueprint	5%	Rare — unlocks Corroded Blade

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2. Forgotten Facility — Intermediate

Recommended Gear: Iron armor, iron sword (22+), Circuit Board, 8+ healing salves Time Limit: 12 minutes (oxygen timer)

Atmosphere Hazard

The Forgotten Facility has no breathable atmosphere. You must craft an Oxygen Pack (unlocked by Circuit Board from Rust Cavern) before entering.

Oxygen Pack stats:
- Duration: 15 minutes (in-game)
- Degrades 25% faster while sprinting
- Refill station at dungeon checkpoint (midway)

Without Oxygen Pack: 60s until suffocation starts
Suffocation damage: 5 HP every 3 seconds

Enemy List

Enemy	HP	Damage	Count	Special
Security Drone	40	8 (ranged)	6	Flies, weak to electric damage
Broken Construct	150	20	3	Armored (front), attack from behind
Data Leech	25	5	5+	Invisible until attacking

DANGER: Data Leeches are invisible and make no sound. Watch for your HP bar dropping — that's the only warning. Equip a Thermal Visor (crafted from Rusted Key loot) to see them.

Boss: Security Mainframe

HP: 600 | Damage: Varies by phase

Phase 1 (100%-50%):
- 3 Security Drones active (re-spawn if killed)
- Mainframe fires laser grid (1-shot at close range)
- Strategy: use the pillars as cover, pick off drones first

Phase 2 (50%-0%):
- Drones stop spawning
- Mainframe overheats — vacates floor tiles in sequence
- Floor tiles glow red 2s before becoming lava
- Strategy: keep moving, never stand still for more than 3s
  This is a DPS race — the entire floor becomes lava after 60s

Drop Table

Item	Drop Rate	Notes
Battery Tech Blueprint	100%	Quest reward
Power Cell	90%	Energy source
Security Bypass Chip	25%	Access hidden lab in zone 3
Mainframe Core	10%	Used in Power Armor
Laser Drill Arm	3%	Rare weapon upgrade

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3. Cryo Vault — Advanced

Recommended Gear: Full iron+ gear, Battery Tech, 12+ advanced medkits, cold resistance potion ×2 Time Limit: 15 minutes (hypothermia timer)

Temperature Mechanics

The Cryo Vault is kept at -50°C. Without protection:

No protection:  -5 HP every 2 seconds (death in ~30s)
Cold Potion:    -5 HP every 10 seconds (2.5 min survival)
Heated Armor:   No damage (requires Battery Tech)

WARN: The Cold Resistance Potion recipe requires Frost Lichen, found only on the north face of the mountain near the dungeon entrance. Gather at least 10 before attempting the vault. Each potion needs 3 Lichen.

Boss: Frost Walker

HP: 1200 | Damage: 30 (melee), 15 (ice shard ranged)

Phase 1 (100%-70%):
- Slow, telegraphed swings
- Occasional ice shard volley (3 projectiles)
- Strategy: learn the shard dodge timing — they fire at fixed intervals

Phase 2 (70%-30%):
- Speed increased by 40%
- Summons ice pillars that explode after 5s
- Ice pillars block movement — positional trap
- Strategy: destroy pillars ASAP with ranged weapon

Phase 3 (30%-0%):
- Enrages — double damage, half attack cooldown
- Floor becomes slippery (movement control = hard)
- Strategy: kite in a circle pattern. Do not stop moving.
  Use the pillars from Phase 2 as shields against ice shards.

{
  "frost_walker_loot_strategy": {
    "approach": "Save burst damage abilities for Phase 3",
    "why": "Phase 3 is the shortest but deadliest phase. Shorten it as much as possible.",
    "recommended_weapons": [
      "Cryo-resistant blade (any Tier-2+)",
      "Ranged weapon with Fire ammunition (3× damage vs Frost Walker)"
    ],
    "minimum_healing_items": "12 advanced medkits"
  }
}

Drop Table

Item	Drop Rate	Notes
Cryo Blade Blueprint	100%	Quest reward — best pre-endgame weapon
Permafrost Shard	75%	Upgrade material
Vault Access Code Fragment	20%	Needed for endgame vault
Frost Walker Trophy	5%	Cosmetic base decoration
Cryo Generator Schematic	2%	Unlocks Tier-3 power generation

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General Dungeon Tips

• Mob respawns: Only bosses do not respawn. Regular mobs return after 10 minutes.
• Multiplayer scaling: Each additional player adds +40% boss HP and +1 extra mob per group.
• Death inside dungeon: You respawn outside the entrance. Run back to recover your bag.
• Hidden caches: Look for slightly different colored wall tiles — they conceal loot rooms.

TIP: All three dungeons have a shortcut exit that opens after defeating the boss. Use it instead of walking back through cleared rooms. The shortcut is always marked with a green glow on the wall near the boss arena.

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Changelog

Version	Changes	Date
v0.3.2	Cryo Vault Phase 3 aggro radius reduced, Frost Walker HP adjusted from 1500→1200	2026-04-30
v0.3.0	Forgotten Facility oxygen mechanics added, Security Mainframe laser grid damage reduced	2026-04-15
v0.2.5	Initial publication	2026-03-28