Tenebris Somnia All Monsters: Every Boss and Creature Encounter Guide

What Counts as a Monster in Tenebris Somnia

Tenebris Somnia drops new creatures on you without much warning, so a single organized list of Tenebris Somnia all monsters saves a lot of guesswork. Some of these things die in four wrench swings; others cannot be damaged at all until you craft a specific knife. Knowing which is which is the difference between a clean run and a reload. This guide to Tenebris Somnia all monsters covers every documented enemy and boss encounter, the rooms they appear in, and the trick that makes each one survivable.

The game itself is a 2D retro survival horror adventure from developer Andrés Borghi and Saibot Studios, published by New Blood Interactive and released on October 16, 2026 according to the official Tenebris Somnia Steam page. That page describes the core loop plainly: solve puzzles, survive, and fight "horrible creatures." As of October 20, 2026, the same Steam store listing recorded 648 user reviews with 93% of them positive — a snapshot of early reception, not a permanent score.

One honesty note before the list: Tenebris Somnia does not ship an in-game bestiary, and the walkthrough sources used here name only some of the creatures. Where a monster has no official name, this guide identifies it by the room or sequence where it appears so you can still match it to what you are fighting.

Combat Basics Before You Meet Anything

Every encounter in Tenebris Somnia runs on the same small set of rules, and internalizing them matters more than any individual boss trick.

• You have four health points. Trading hits is almost never worth it.
• Lavendoleum restores one health point. The small purple bottles are scattered across cabinets, containers, and star-locked boxes.
• Real-time movement, turn-based thinking. Wait for an enemy to commit to an attack, step out of range, then punish the recovery.
• Your first weapon is a Wrench, found in the bathtub of the third-floor apartment bathroom, and it doubles as a puzzle tool for prying boards off the bedroom window.
• The Iron Pipe is the upgrade most players want. It sits in the bar bathroom and roughly doubles your melee range, which makes every later creature fight noticeably safer.

A basic apartment creature takes about three to four clean Wrench hits. That number is your baseline — if something is surviving far longer than that, you are probably missing a mechanic rather than under-leveled.

The Early Creatures: Apartment, Poster Chase, and Dining Room

The first real fight happens when you try to leave the third-floor apartment after unlocking the study. It is a single melee creature with no special gimmick, and it exists to teach the wait-and-punish rhythm. Kill it, ride the elevator down, and the game starts layering creatures into puzzle rooms.

Two sequences stand out in the early hours:

• The poster chase. After you assemble the torn Devora poster from six cardboard cutouts, burn it with the Lighter to get the mop — and then run, because multiple creatures pursue Julia out of the movie office area.
• The dining room ambush. Solving the black-tape and Plate-with-X puzzle opens the center doors and hands you the Green Square Stone. The walkthrough notes a new enemy appears when you return to the dining room, so heal before you backtrack.

Later, during the VHS tape sequence in Ivan's third-floor living room, you fight waves of enemies that are only visible on the television screen. Watch the TV to track their positions instead of staring at Julia. This is one of the few encounters in Tenebris Somnia all monsters lists tend to skip, and it punishes players who treat it like a normal brawl.

Boss Breakdown: Candlehead, Fumus, Vitria, Carnito, Lacuna, Hermes, and Amy

The named fights are where the monster design gets genuinely strange. Here is the supported overview.

Candlehead is the first boss that forces a mechanic instead of a damage race. It is untargetable while the room's candles burn, so circle the arena and snuff them out, then close distance during the brief window when it turns visible. Do not chase it when it retreats — and step away the moment it winds up, because it detonates everything in a small radius before the candles relight.

Fumus rewards patience over aggression. Stay at range so she favors her slam, which telegraphs clearly and leaves her recovering. She takes no damage while the red circle surrounds her, so hold your revolver ammo until it drops. The floor circles are the real threat: step on one and Julia turns the gun on herself. More circles spawn as her health falls, so keep a clean exit lane.

Vitria is flagged by the source walkthrough as a genuinely difficult fight without a documented step-by-step pattern, so treat it as a preparation check — full Lavendoleum, revolver loaded, Iron Pipe equipped.

Carnito closes out the Desiderium Floor 1 enemy waves. Clear the room, then grab the Tin Key hanging from the wire to open the nearby door.

Sanguis, the Relicta Ghosts, and the Monsters You Cannot Kill

Two encounters break the normal rules entirely, and both matter for the ending.

Sanguis is a chase, not a duel. Statues block your path through the Film School, but you can bait his lunge into them to shatter the obstacles — and the blades erupting from the floor damage him too. Baiting him into the final massive blade near the end of the run impales him. You can also simply escape, since the source walkthrough confirms fleeing is a valid outcome.

The Relicta ghosts are invincible for most of the game. They chase Julia down the elevator shaft after the Melanosis Knife sequence, and there is nothing to do but run. That changes once you craft the Aurifer Knife from the Viridis Knife and the locked Hotel Door cutscene — at that point the ghosts fear you and flee instead of attacking.

That fear is the ending switch, and it is the single most important thing to know about Tenebris Somnia all monsters encounters:

• Kill zero Relicta with the Aurifer and you get the good ending, Solve Et Coagula.
• Kill even one Relicta and you lock in the bad ending, Magnum Opus. It does not matter how many more you spare.

Make a manual save right before you decide, because the choice is irreversible for that run. The secret Vivus Ex Mortibus route also involves switching TV channels until enemies spawn in a specific room, so a late-game monster encounter can be a puzzle step rather than a threat.

Survival Tips That Apply to Every Encounter

• Upgrade to the Iron Pipe early. The range difference trivializes creatures that were dangerous with the Wrench.
• Save revolver and shotgun ammo for bosses with clear vulnerable windows. Regular creatures die to melee.
• Never fight at one health point. Backtrack for Lavendoleum instead of gambling on a clean dodge.
• Clear rooms before solving puzzles inside them. Several puzzles spawn a new enemy the moment they resolve.
• Treat every chase as a sprint. The poster escape and the elevator shaft sequence are not fights; stopping to swing is how runs end.

Tenebris Somnia keeps its monster count deliberately murky, but the pattern is consistent: early creatures test your timing, bosses test your patience, and the Relicta test your restraint. Once you know which category you are in, nothing in the game feels unfair.

FAQ

How many monsters are in Tenebris Somnia? There is no official bestiary or published creature count. Documented encounters include unnamed apartment and dining-room creatures, Candlehead, Fumus, Vitria, Carnito, Sanguis, the Relicta ghosts, Lacuna, Hermes, Amy, and screen-only enemies during the VHS sequence.

Can you kill the Relicta ghosts? Only with the Aurifer Knife, obtained late in the story. Before that they are invincible and must be outrun. Killing even one with the Aurifer locks you into the bad ending, Magnum Opus.

Which boss is the hardest in Tenebris Somnia? The source walkthrough singles out Vitria as a notably hard fight and treats Fumus as a war of attrition built around baiting slam attacks. Candlehead is the easiest of the named bosses once you understand the candle mechanic.

Do you have to fight Sanguis? No. You can bait him into statues and floor blades, impale him on the final giant blade, or skip the kill entirely and run. Escaping is a supported outcome of that chase.