Eternal Bastion¶
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Eternal Bastion is the ultimate PvE endgame challenge on uaRO. Gather a party of 12 and fight through 100 waves of escalating enemies, ending with a randomly selected final boss. Read the Instance Guide for how to start an instance, run completion, run limits and other important info.
Quick Facts
- Location: Bastion NPC in Veins, the Canyon Village (
/navi veins 218/136) - Party Size: 12 person minimum
- Base Level: 85
- Duration: 4 hours max, the instance fails if the timer runs out
Rules¶
| Rule | Detail |
|---|---|
| Mob Loot | No loot drops from wave mobs |
| Death | Permadeath: you are warped out with no resurrection inside (see Permadeath & Extra Lives) |
| Storage | Accessible waves 1–79, NPC destroyed at wave 80+ |
| Party Lock | If party composition changes at any point, the instance resets and is destroyed |
| Re-entry | Once you leave or die out, you cannot return to the instance — disconnects are the exception: if the run is still active and a party member is still inside, you are returned to your party when you log back in |
| Run Unlock | No end-of-dungeon NPC requirement: your next run unlocks automatically on completing floor 100 |
Wave Progression¶
| Waves | Difficulty | Description |
|---|---|---|
| 1–20 | Beginner | Porings, Fabres, Lunatics — a warm-up phase to ease into the challenge |
| 21–40 | Intermediate | Enemies start to hit harder |
| 41–60 | Advanced | Expect tougher enemies with more HP |
| 61–80 | Elite | High HP, strong AoE attacks, and random status effects on the map |
| 81–99 | Endgame | Bio 4 / HTF / OGH monsters — high-damage mobs with complex mechanics |
| 100 | Final Boss | A unique MVP with devastating skills, randomly selected from the boss pool |
Wave 100 Boss Pool
The final boss is randomly selected from the following pool each week:
| Boss |
|---|
| Satan Morocc |
| Scholar Celia |
| Wounded Morroc |
| Biochemist Flamel |
| Ifrit |
| Celine Kimi |
| Corrupted Soul |
| Paladin Randel |
| Amdarais |
| Valkyrie Randgris |
| Stalker Gertie |
| Beelzebub |
Wave Mechanics¶
| Mechanic | Description |
|---|---|
| Wave Timer | 120 seconds per wave, 300 seconds for Wave 100 |
| Skip Vote | !skip command (majority vote >50%) to advance — stacks current and next wave mobs for faster clearing. Disabled at milestone waves |
| Ready Check | All 12 members must type !ready within 60 seconds or the instance closes |
Environmental Hazards¶
- Wave 61+: random status effects every 60 seconds (50% chance): Curse, Silence, Confusion, Blind, or Bleeding (10 seconds, unavoidable).
- Wave 81+: Meteor Storm eruptions every 60 seconds (25% chance): volcanic strikes around each player, 3-5 bursts with 2-second intervals.
Permadeath & Extra Lives¶
Permadeath
If you die, you are warped out of the instance. There is no resurrection inside the instance. Once you're out, you're out. Come prepared or don't come at all.
Milestone rewards also grant extra lives to each party member:
- Wave 75: each member gains 1 extra life
- Wave 90: each member gains 1 additional extra life (max 2)
When you die with an extra life, you revive at full HP after a 3-second cooldown. When you die with no extra lives remaining, you are permanently removed from the instance.
Milestone Rewards¶
Each milestone gives a reward box with the contents below.
| Wave | Reward Box | Item | Qty |
|---|---|---|---|
| 50 | Bastion Conquerer I (25446) |
 Poring Coin (7539) |
20 |
| 75 | Bastion Conquerer II (25447) |
 Tyr's Blessing (14601) |
1 |
| Zeny | 500,000 | ||
| 90 | Bastion Conquerer III (25448) |
 Bastion Coin (406105) |
1 |
 Jewelry Box (12106) |
1 | ||
Tyr's Blessing (14601) |
1 | ||
| Zeny | 1,000,000 | ||
| 100 | Bastion Conquerer IV (25449) |
Bastion Coin (406105) |
2 |
 Old Card Album (616) |
2 | ||
 Sillit Pong Bottle (6443) |
1 | ||
| Zeny | 2,000,000 |
Bastion Coin Shop¶
Exchange Bastion Coins (406105) at Vulcarion in Veins (/navi veins 223/133).
| Costume | Cost |
|---|---|
 Bastion Armor (406100) |
10 |
 Bastion Shoes (406101) |
10 |
 Bastion Shield (406102) |
10 |
 Bastion Magic Weapon (406103) |
10 |
 Bastion Physical Weapon (406104) |
10 |
Vulcarion also offers enchants at 10 Bastion Coins each. The newest additions:
| Enchant | Effect |
|---|---|
| SP Consumption | Reduces SP consumption by 20% |
| Healing Effectiveness | Raises the amount your own healing skills restore by 10% |
Enchants can be removed again by the Master Craftsman in Prontera. All enchants are switched off inside WoE and GvG castles.
Bastion Coins are untradeable and account-bound.
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