Entity Mercer Danger Level Lookup

MDL Lookup Tool

Mercer Danger Level rates entity lethality standardized across the twenty-nine Bestiary entries. Filter by MDL tier to see which threats may consume spawn budget on your target depth maps. Search by entity name for quick Terminal cross-reference.

Point-based spawning since v0.6.5 ties floor size tiers to total MDL budget—knowing entity costs helps predict multi-spawn nights on large Atlas layouts.

Using MDL for Planning

Early runs: focus low MDL commons until Floor 15+. Mid runs: prepare for mixed budgets with uncommons. Late runs: rare MDL spikes on Floor 70+ demand consumable reserves and Black Market builds.

Daily Mode Floors 1–20 may exclude deepest rares depending on daily seed—still filter for daily entity announcements.

Cross-References

Pair lookup results with entity category pages—common, uncommon, rare, bosses—for behavior text beyond numbers. Boss entities like Envy and Sloth occupy conditional floors separate from random spawn tables.

Warden and Smile Clan entries illustrate mid-tier MDL threats worth filtering when planning Floors 35–70 walkthrough goals.

Lookup Workflow

Step one: note today’s depth target and map size from Atlas guides. Step two: filter MDL tier expected at that band. Step three: read behavior on entity pages for filtered names. Step four: pack consumables answering those threats—bleed for Glass, speed for Envy-like chases if boss detours possible.

Refresh filters after patches—v0.6.5 point spawning and v0.6.8 map range changes altered which MDL mixes appear on familiar depths.

Related Guides

Frequently Asked Questions

What is MDL?
Mercer Danger Level—a standardized threat rating for Bestiary entities.
How many entities?
Twenty-nine entities in the Bestiary with MDL ratings.
Does MDL equal spawn chance?
MDL relates to spawn point cost within budgets—not identical to probability.
When did point spawning start?
Version v0.6.5 introduced point-based entity spawning.
Boss MDL lookup?
Deadly Sins appear on conditional floors—see boss pages for mechanics.
Entity Category MDL Points Min Floor Tips
Drone Common Low 1 2 Basic patrol entity—learn sound discipline early.
Grappler Common Low-Medium 1 2 Grabs from range—break line of sight quickly.
Lungwort Common Medium 2 2 Sound-reactive fungus—crouch near it.
Lurker Common Medium 2 2 Ambushes from corners—check behind you.
Mimic Common Medium-High 2 2 Impersonates players—watch movement and chat.
Shrieker Uncommon Medium 1 5 Alerts other entities—silence is critical.
Warden Uncommon High 3 5 Blind but hears everything—always crouch nearby.
Gazer Uncommon High 2 10 Line-of-sight predator—break vision behind cover.
The Twins Uncommon High 4 10 Coordinated chase—split carefully in teams.
BSoD Uncommon Medium 2 5 Lever task hazard—pull only when safe.
Channel Uncommon High 3 10 Zone control entity—plan escape routes.
Apollyon Rare Very High 4 15 Can chase during ability animation—respect windup.
Bullseye Rare High 4 15 Ranged threat—use cover between tasks.
Projected Rare Very High 2 10 Fusion mechanics—learn soul/husk behavior in Bestiary.
The Salesman Rare Variable 2 1 Any floor spawn—luck influenced.
Teratoma Rare Very High 3 20 High threat alone—use consumables.
Console Unusual Extreme 4 2 Extremely rare—luck increases spawn.
Smile Unusual Extreme 2 2 Clan entity—extreme rarity.
The Witness Unusual Extreme 2 2 Observation mechanic—avoid direct engagement.
The Hat Man Conditional Extreme — — Fear meter trigger—manage fear carefully.
The Joker Conditional Extreme — — Hidden classification—avoid engagement.
The Dealer Conditional High 4 — Shop-related spawn—Bestiary unlock rewards item.
Echovore Boss Boss — 15 Random post-F15 or Big Bad upgrade.
Mannequins Boss Boss — 15 Group boss—coordinate team movement.
The Sin of Envy Deadly Sin Boss — 20 Collect papers, dodge daggers and traps.
The Sin of Sloth Deadly Sin Boss — — Survive power outage window then reboard.
Eris Other Variable — 1 Bonus entity events—Oh Fiddlesticks! modifier boosts her.
Jack-O-Bomber Seasonal High 4 10 October seasonal—more common during Spooky events.