Collapsed Fortress Basement Sealed Dungeon · Lv. 20 · Verteron
Collapsed Fortress Basement is a Sealed Dungeon in AION 2. This page lists what the global client knows about it: level, party size, difficulties, rewards and where its entrance is.
The underground part of the fallen Verteron Fortress. It is used by the Krall as their residence.
- Type
- Sealed Dungeon
- Rec. level
- 20
- Region
- Verteron
Collapsed Fortress Basement quick guide
The short version: what you need to enter Collapsed Fortress Basement and the drops worth the run, read from the game client.
Before you go
- Level 20+
- Entrance Verteron Fortress Ruins, Verteron
Run Collapsed Fortress Basement with the map open beside you
Party dungeons, raids and instances with entry rules, bosses, rewards and an interactive dungeon map.
- Interactive dungeon maps with boss pins
- Bosses, difficulties and weekly reset day
- Rewards and loot for every mode
Collapsed Fortress Basement Map: Bosses, Rooms & Route
Interactive Collapsed Fortress Basement map for AION 2 showing 3 monster packs, portals, doors and interactive objects on the in-game dungeon map.
Collapsed Fortress Basement map (Standard) with every boss, monster pack and object placed from the game client's spawn data.
Collapsed Fortress Basement Walkthrough: Monsters & Route
Every monster you meet in Collapsed Fortress Basement on Standard: 3 monster packs with 6 monsters in total, plus the chests, shrines and other interactions on the map.
Entrance
Start at the dungeon entrance.
Monsters in Collapsed Fortress Basement
Collapsed Fortress Basement has 3 monster packs with 6 monsters in total. Monsters here are Lv. 20. Expect mostly Basement Krall Healer, Basement Krall Watcher, and Basement Krall Scout. Along the way: Worn Leather Bag ×2, Worn Diary, History of Those Left Behind Vol., Worn Chest ×2, and Pile of Worn Papers ×2. Teleport portals here: Exit.
- Worn Leather Bag ×2
- Worn Diary
- History of Those Left Behind Vol.
Worn Chest ×2- Pile of Worn Papers ×2
Exit
Monster roster
| Monster | Count | Monster packs |
|---|---|---|
 Basement Krall Healer | 2 | 2 |
 Basement Krall Watcher | 2 | 2 |
 Basement Krall Scout | 2 | 2 |
Collapsed Fortress Basement entry requirements & limits
Entry level, party size and run limits for each mode of Collapsed Fortress Basement, read from the game client.
| Mode | Party size |
|---|---|
| Standard | Solo |
Bosses and monsters
Bosses: 0. Other monster types inside: 3. Open any of them for its level and drops.
Monsters:
Basement Krall HealerBasement Krall WatcherBasement Krall ScoutClear rewards
What the game hands out for clearing Collapsed Fortress Basement, per difficulty. Elyos and Asmodians get different rewards here.
| Difficulty | Elyos | Asmodian |
|---|---|---|
| Standard | 15,000× Kina (Bound)2× Sealed Wing Featherdown (Bound)2× Statue Scrap: Day Illusion Wings (Bound) Title: Time Walker2× Daevanion Crystal (Bound)2× Wisdom Stone (Bound)1,250× Enhance Stone | 15,000×Kina (Bound)1,000× Abyss Points2,500×Enhance Stone |
What Collapsed Fortress Basement rewards turn into
Substance Morph recipes that spend items Collapsed Fortress Basement gives out (1). Counts and Kinah costs are read from the game client.
| Result | Materials | Success |
|---|---|---|
 Amplify Stone (Unique) | 100% |
Every recipe, with its limits and requirements, is on our conversion page: all Substance Morph recipes
Loot table
The global client has no loot table for Collapsed Fortress Basement. Loot from instanced bosses and monsters is rolled by the game server, so there are no items or drop chances to list.
Entrance location
Where to enter Collapsed Fortress Basement: Verteron Fortress Ruins on the Verteron map.
Verteron Fortress Ruins · Verteron
Quests tied to Collapsed Fortress Basement
The quest Collapsed Fortress Basement is tied to Collapsed Fortress Basement.
| Name | Type |
|---|---|
| Collapsed Fortress Basement | Exploration |
More Sealed Dungeon
| Name | Rec. level |
|---|---|
| Abandoned Memorial Room | 20 |
| Closed Hideout | 20 |
| Destroyed Scriptorium | 20 |
| Distorted Cave | 20 |
| Fortress Grave | 20 |
| Fortress Jail | 20 |
| Hidden Ruins Altar | 20 |
| Karat's Nest | 20 |
Data read from the AION 2 global client (build 0.0.4387.0). Updated for the Nov 4, 2026 patch. How we read the game files
Collapsed Fortress Basement is a Sealed Dungeon in AION 2 around level 20. The global client lists its bosses, the monsters inside and any clear rewards, all shown on this page. Numbers come straight from the game files and match the North American and European servers.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Collapsed Fortress Basement FAQ
What do Collapsed Fortress Basement rewards turn into with Substance Morph?
Substance Morph turns them into: Amplify Stone (Unique) for 4× Amplify Stone Fragment (Unique) (Bound) and 2,500× Enhance Stone.
Where is the entrance to Collapsed Fortress Basement?
The entrance to Collapsed Fortress Basement is in Verteron Fortress Ruins on the Verteron map; the map on this page marks the exact spot.
What level do you need for Collapsed Fortress Basement?
The game recommends level 20 for Collapsed Fortress Basement.
What monsters are in Collapsed Fortress Basement?
Collapsed Fortress Basement has 3 monster packs with 6 monsters on Standard. The most common are Basement Krall Healer, Basement Krall Watcher, and Basement Krall Scout; the walkthrough above lists them stage by stage.