Abyssus Locked Door Guide – How to Get Keys

Aug 14

Locked doors in Abyssus are most often linked to merchants or treasure rooms, but in the early game they can feel like roadblocks if you have no keys. Since keys are rare at first, knowing where they come from and how to increase your supply is essential for making the most of these locked rooms.

How to Get Keys in Abyssus

Keys drop in a few ways, but none are guaranteed early on. The most common source is chests, where a key can appear instead of other loot. Rarely, keys can drop from enemies, with at least one confirmed case from a special rare enemy.

You can also unlock a passive tree upgrade that gives you starting keys at the beginning of each run.

Locked Doors and Merchants

In the first zone, all merchants are behind locked doors, so a key is required to reach them. Behind these doors, you may also find a treasury room with gold and a chest instead of a shop.

If you see only a chest behind a locked door, you can save your key for a later merchant or higher-value reward.

Later zones can spawn a free merchant without a locked door, usually in garden-like areas toward the end of a stage. These free merchants appear by chance and are not guaranteed every run.

Tips for Managing Keys

Save your keys for merchants when possible, especially before boss fights.
If you unlock the passive for starting keys, you can guarantee early access to a shop.
Consider skipping treasury rooms if gold is not immediately useful.
Keep progressing in the passive tree to increase the frequency of shop spawns.

Final Blurb

In Abyssus, locked doors are both a frustration and a reward opportunity. With keys being rare early on, focus on getting them from chests, hunting rare enemy drops, and unlocking the starting key passive. Plan your usage around merchants and high-value rooms to get the most from every run.

FAQ

Where do keys come from in Abyssus?

Mostly from chests, sometimes from rare enemies, and through a passive tree upgrade that gives starting keys.

Do all merchants require a key?

No. In later zones, some merchants appear without a locked door, but these are random spawns.

Should I use a key on a treasury room?

Only if you need gold immediately. Otherwise, save it for a merchant or rare item room.