29 R.E.P.O. Monsters, One Chart: Detection Type, Danger Level, and the Exact Counter for Each Enemy (2026)

Most R.E.P.O. monster guides list what each enemy looks like. This one answers the question that actually keeps you alive: how does this monster detect me, and what does that change about how my team moves?

The Monster Update (v0.3.0) added 10 new enemies — Bella, Birthday Boy, Elsa, Tick, Gambit, Headgrab, Heart Hugger, Oogly, Cleanup Crew, and Loom — bringing the roster to 29. Each uses a fundamentally different detection rule. A Huntsman hears you breathe; a Shadow Child notices you staring at it; a Loom just knows where you are regardless of cover. The counter for each is radically different, and treating them all the same is how clean runs collapse.

Below: a detection-type framework, the full 29-monster reference table, and detailed breakdowns for the enemies that punish squads who don’t understand their mechanics.

Verified against R.E.P.O. build 0.3.1, May 2026. Values change with updates.

How R.E.P.O. Monsters Detect You

Five detection categories govern every encounter. The correct counter depends entirely on which category you’re dealing with — general slow movement doesn’t help when the monster responds to sound, not sight.

• Sight — Activates when you cross its line of sight. Crouching reduces detection radius. Breaking line of sight behind furniture or a closed door interrupts most pursuits.
• Sound — Reacts to audio: sprinting, dropping items, impacts. Crouch-walking is the safe movement mode. The Huntsman is the extreme case — completely blind, reacts instantly to any noise in its 5× hearing radius.
• Heavy Impact — Triggered by physical vibration, collisions, or heavy footsteps. Move deliberately; avoid throwing objects in adjacent rooms.
• Proximity — Range-based activation regardless of sight or sound. Getting close enough is all it takes. Tranq guns and avoidance routes are the primary counters.
• Special Trigger — Unique activation rule per monster. Standard stealth rules don’t apply. Shadow Child punishes staring; Bella punishes blocking her path; Tick punishes being picked up. Memorizing each trigger is mandatory.

All 29 R.E.P.O. Monsters: Complete Reference Table

Sorted by in-game Danger Level. Starred entries (★) have full breakdowns in the sections below.

Priority Threats: Full Breakdown

Bella: Read the Bell Sequence, Don’t Panic

Bella is listed as Danger Level 1, which understates the threat at higher multipliers. On paper she’s one of the easiest monsters to avoid — she gives you three audible warnings before going aggressive. In practice, teams that don’t know the bell sequence panic at the wrong moment and trigger exactly the charge they were trying to avoid.

The sequence: one ring (mild agitation — move toward the wall now), two rings (she’s actively annoyed — you should already be clear), three rings (last chance — if you’re still in her path, she charges). Her aggressive state sends her at high speed in unpredictable arcs. In narrow corridors at higher multipliers, her 10-second pursuit window is enough to down a carrier who can’t dodge with weight in hand.

The squad rule when Bella is active: the player in front calls her direction. Carriers step to the wall as a unit. Don’t try to outrun her past the third bell — step aside and let her ride through. She resets faster than most players expect, and a calm step-aside is almost always safer than a sprint.

Elsa: The Run-Ender Disguised as DL1

Elsa enters as a 600 HP dog that does zero damage in passive state. Her danger is the transformation trigger: any damage from any source — a player weapon discharged nearby, a Banger detonation, another monster’s attack, any hazard — flips her into an aggressive beast with high agility and continuous contact damage.

Three things separate her from standard DL1 monsters. First, 600 HP means the transformed version can’t be quickly put down; the engagement becomes a sustained drain. Second, other monsters can trigger her without any player intent — a Banger group detonating near Elsa is a common cascade that leaves the squad fighting two simultaneous threats. Third, her damage is contact-continuous rather than hit-based, which punishes players who try to run through her rather than fully around.

Protocol when Elsa is on the map: announce her position immediately, assign one player to monitor and pet her when accessible, and maintain a no-weapons perimeter around her. Duck Bucket neutralizes a transformed Elsa. Never discharge weapons in a room adjacent to her position.

Reaper: Two Mechanics Worth Knowing

The Reaper pursues aggressively, stun-locks with rapid slashes, and respawns quickly at high difficulty. Two exploitable behaviors make the difference between consistent extraction and repeated wipes.

Door distraction: The Reaper reliably stops to investigate doors. A closed door placed between you and an active Reaper creates a meaningful pursuit break. This behavior isn’t guaranteed on every encounter but is consistent enough that closing doors behind you while fleeing a Reaper is the correct habit to build.

Fall stun: A Reaper stunned by falling holds that stun state for approximately two seconds. Lead it to an elevated position, let it drop, then use that window to put a closed door between you and it. Combined, these two mechanics give a coordinated squad enough separation to extract without direct combat.

At high multipliers, Reaper respawn timers shorten significantly. The focus shifts from elimination to separation: create distance and extract rather than committing to a fight.

Loom: When the Map Has No Safe Rooms

The Loom breaks the core assumption behind every other encounter in the game — that hiding works. It tracks player location regardless of cover, hiding spots, or room transitions. Squads that treat it like a Sight monster and crouch behind crates will find the Loom simply walks into that room.

The correct mental model: the Loom is a slow moving obstacle requiring continuous movement around it, not away from it. Use furniture and corridors as chicane barriers to stay ahead of it rather than stopping behind them. Assign one player as a dedicated kiter — ideally the squad member carrying the least weight — who keeps the Loom engaged by circling large objects while the rest complete extraction. At higher difficulty, its health pool makes elimination impractical before the timer becomes critical. Kite, extract, don’t fight it.

Squad Protocol: Adjusting Carries by Monster Type

Knowing each monster’s detection type changes carry assignment for the whole team. With 4 players and 29 possible enemies, the split between carriers and scouts depends on what’s active on the floor.

Sound-Detection Monster Active (Huntsman, Bowtie, Robe)

Two players carry items at crouch-walk speed. The other two move ahead as scouts without cargo — they reach extraction faster and call the all-clear. No one sprints near the monster’s last known position. Dropped items create audio spikes; carry only what you can place without noise. The Huntsman reacts instantly to any sound, so no voice callouts near it until the map is clear.

Special-Trigger Monster Active (Bella, Birthday Boy, Elsa)

Assign one player as the dedicated monster caller — their only job is tracking position and broadcasting it to the team. Carriers stay focused on the route, not the monster. This separation prevents the common failure point: a carrier watching the monster rather than the balloon cluster they’re about to walk into. Birthday Boy’s balloon zones accumulate over a full run and can seal corridors if no one is actively tracking them.

Omniscient or Heavy-Impact Monster Active (Loom, Trudge)

Don’t cache items in hiding spots — the Loom will walk directly into them. All carries happen continuously at slow speed. The highest-stamina player takes kiting duty against the Loom. For Trudge, no throwing or dropping items within two rooms of its last position; the vibration signature carries through walls.

Stun-Exploitable DL3 Active (Headman, Reaper, Chef)

Keep one player cargo-free as the designated stunner. Headman in a corridor without a Tumble stun available is a run-ending encounter — the stunner creates the escape window while carriers move through. Regroup at the next room before continuing.

For the tools that support each of these strategies, the R.E.P.O. best items guide covers which equipment synergizes with specific monster types. Full role breakdowns for 2–6 player configurations are in the R.E.P.O. co-op roles and extraction guide. If R.E.P.O.’s monster depth is what you’re after, the best co-op games of 2026 hub has comparable picks across every genre.

FAQ

Which monsters drop the most valuable orbs?

Rugrat orbs are consistently among the highest-value drops at $2,000–$4,000. Spewer orbs run $1,000–$4,000. Gnomes, Bangers, and Ticks — unless killed while actively latched rather than passive — don’t drop standard enemy valuables. The map cap is 10 orbs simultaneously; once a new one spawns beyond that limit, the oldest existing orb explodes rather than staying collectible. Prioritize pickup speed after high-value kills.

Can Elsa be prevented from transforming if another monster hurts her?

Only if the damage is intercepted before it lands, which is rarely practical mid-run. Banger detonations near Elsa are the most common accidental trigger — players don’t connect the explosion to the dog transformation until it’s too late. Prevention is map awareness: know where both Elsa and the Bangers are, and never discharge weapons or trigger explosives in rooms where both are present.

How does Robe’s faster-when-observed mechanic scale in 4-player co-op?

Each player looking directly at the Robe contributes to its speed multiplier simultaneously. Four players all watching it makes it extremely fast — faster than any single player can outrun. Designate one person to track the Robe; everyone else looks away. The tracker monitors via peripheral vision or by watching its shadow rather than facing it directly. If you lose track of it, listen for the bird-like screams instead of turning to look.

Is the Tick’s healing mist worth farming intentionally?

Yes, when the squad has taken significant damage and the immediate area is clear of DL3 enemies. The healing mist benefits every player in range and triggers only after the full latch-and-release cycle completes. Killing the Tick early — before the cycle finishes — permanently denies the heal to the entire squad. The squad member with the most current HP should initiate the pickup to minimize total damage taken during the latch.

Sources

1. REPO Monsters Guide 2026: All Enemies and Tips — GamerBlurb
2. REPO: Every New Monster Added in the Monster Update — Game Rant
3. R.E.P.O. Detailed Enemy Guide — Steam Community
4. REPO Guide: How to Beat the New Enemies in the Monster Update — ReportAFK
5. All R.E.P.O. Monsters Listed — Destructoid
6. Complete Guide to All Monsters in R.E.P.O. — Lagofast

Michael R.

I've been playing video games for over 20 years, spanning everything from early PC titles to modern open-world games. I started Switchblade Gaming to publish the kind of accurate, well-researched guides I always wanted to find — built on primary sources, tested in-game, and kept up to date after patches. I currently focus on Minecraft and Pokémon GO.