# 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 — culminating in a randomly selected final boss. No gimmicks, no distractions — just pure combat and teamwork.
***
## How to Enter
* Form a party of **12** players
* Talk to the Bastion NPC to initiate the instance
* All 12 members must type `!ready` within **60 seconds** or the instance closes
* **1-week** account-bound cooldown after entry
***
## Rules
| Rule | Detail |
| -------------- | ------------------------------------------------------------------------------- |
| **Party Size** | `12` person minimum |
| **Cooldown** | `1 week` account-bound |
| **Duration** | `4 hours` max — instance fails if the timer runs out |
| **Mob Loot** | No loot drops from wave mobs |
| **Death** | Permadeath — warped out of the instance, no resurrection inside |
| **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 |
***
## 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 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 |
| **Party Lock** | If party composition changes at any point, the instance resets and is destroyed |
| **No Re-entry** | Once you leave or die out, you cannot return to the instance |
### Environmental Hazards
!!! info "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
**Storage** — Accessible waves 1–79, NPC destroyed at wave 80+
```
### Wave 100 — Boss Rotation
??? info "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 |
```
***
## Permadeath & Extra Lives
!!! danger "Permadeath — No Second Chances" 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.
!!! tip "Extra Lives" 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
| Wave | Reward |
| ------- | ----------------------------------- |
| **50** | **Bastion Conquerer I** (`25446`) |
| **75** | **Bastion Conquerer II** (`25447`) |
| **90** | **Bastion Conquerer III** (`25448`) |
| **100** | **Bastion Conquerer IV** (`25449`) |
??? info "Reward Box Contents"
```
**Bastion Conquerer I (Wave 50):**
| Item | Qty |
|------|-----|
| 
**Poring Coin** (`7539`) | 20 |
**Bastion Conquerer II (Wave 75):**
| Item | Qty |
|------|-----|
| 
**Tyr's Blessing** (`14601`) | 1 |
| 500,000 **Zeny** | — |
**Bastion Conquerer III (Wave 90):**
| Item | Qty |
|------|-----|
| 
**Bastion Coin** (`406105`) | 1 |
| 
**Jewelry Box** (`12106`) | 1 |
| **Tyr's Blessing** (`14601`) | 1 |
| 1,000,000 **Zeny** | — |
**Bastion Conquerer IV (Wave 100):**
| Item | Qty |
|------|-----|
| **Bastion Coin** (`406105`) | 2 |
| 
**Old Card Album** (`616`) | 2 |
| 
**Sillit Pong Bottle** (`6443`) | 1 |
| 2,000,000 **Zeny** | — |
```
!!! info "April 2, 2026 Hotfix" Shadow costume equipment with stat bonuses has been replaced with Enchant Stones. Enchant Stones are tradeable — Bastion Coins are not. Enchant Stones can be removed from gear for a zeny fee.
***
## Bastion Coin Shop
Exchange **Bastion Coins** (`406105`) at **Vulcarion** in **Veins** (223, 133). Each costume costs `10` **Bastion Coins**.
| Costume |
| -------------------------------------- |
| **Bastion Armor** (`406100`) |
| **Bastion Shoes** (`406101`) |
| **Bastion Shield** (`406102`) |
| **Bastion Magic Weapon** (`406103`) |
| **Bastion Physical Weapon** (`406104`) |
**Bastion Coins** are untradeable and account-bound.
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