The cooperative horror world of *R.E.P.O.* is teeming with mischievous and dangerous creatures, making every mission tense and unpredictable. As you navigate through derelict locations to retrieve valuables, you'll find yourself confronting terrifying monsters intent on halting your progress to the next level.
Each monster in *R.E.P.O.* possesses unique abilities, behaviors, and attack patterns, necessitating strategic adaptation to ensure your team safely returns to the truck. Some monsters silently stalk you before launching an attack, while others are too loud to hide from—yet that doesn't guarantee your safety. Several creatures are drawn to sound, compelling players to move stealthily and quietly, whereas others rely solely on sight, making it crucial to keep them in your line of sight to increase your chances of survival.
With a diverse array of monsters, it can be challenging to discern which ones pose a significant threat and which are mere nuisances—unless they attract more formidable enemies to your location. In survival games like *R.E.P.O.*, knowledge is key; understanding the monsters' behaviors and, most importantly, their damage potential, can greatly enhance your team's chances of success.
R.E.P.O. Monster Tier List

Tier 1 – Mostly a nuisance, can be helpful.
Tier 2 – Manageable unless overwhelmed.
Tier 3 – Lethal if encountered unexpectedly.
Tier 4 – The most dangerous monsters. Capable of instantly killing lower-level players.
Monster | Tier | Description |
Apex Predator (Duck) | 1 | Harmless if left alone; can be strategically used against the Huntsman if timed correctly. |
Gnomes | 1 | Inflict minimal damage and are easily dispatched. |
Animal | 1 | Individually weak, easily captured, and capable of eliminating Gnomes they encounter. |
Hidden | 1 | Can transport you back to the truck or into a monster's path but deals no damage itself. |
Shadow Child | 1 | Harmless if you avoid eye contact. |
Spewer | 1 | Once attached, can be used against other monsters without harming you. |
Bowtie | 2 | Slow-moving unless provoked; its breath causes damage, but it's easily avoidable. |
Peeper | 2 | Causes minimal damage when eye contact is made, but can become dangerous in the presence of other monsters. |
Chef | 2 | Can self-destruct by rolling into each other; avoidable by staying elevated. |
Bangers | 2 | Ten seconds to escape once their dynamite ignites; only dangerous if caught in the blast. |
Huntsman | 3 | Tracks by sound; remain silent or use the duck to avoid detection. A gunshot can be fatal. |
Rugrat | 3 | Extremely strong, capable of killing with thrown objects; a vase can be lethal to low-level players. |
Upscream | 3 | Similar to Animal but inflicts much more damage; multiple spawns can be deadly. |
Mentalist | 3 | Poor vision but acute hearing; each hit deals 50 damage, and multiple can appear simultaneously. |
Trudge | 3 | Extremely slow and noisy, but a single encounter can end your game, even with health upgrades. |
Reaper | 4 | Slow until you're spotted, then accelerates; audible from a distance, but deadly without health upgrades. |
Clown | 4 | Charges upon sighting you, with two deadly attacks: a kick and a laser. |
Robe | 4 | Silent and stealthy, often spotting you first; can pursue under furniture and is lethal if caught. |
Headman | 4 | Relentlessly pursues you, with each bite dealing 50 damage. |
Now that you're aware of the dangers lurking in each new location, explore our other *R.E.P.O.* guides for strategies on how to confront these fearsome foes.