You cleared the Hotel. You know Rush’s screech. You know Ambush’s distorted variant. You can navigate dark rooms by sound alone. You enter The Mines confident. Room 3: a Grumble hanging from the ceiling spots you before you even finish scanning the room. You die. You did not look up. The Hotel never taught you to look up because nothing in the Hotel came from above. The Mines punishes this blind spot within the first 5 rooms.

Grumble is the first Mines-exclusive entity you will encounter, typically appearing between Rooms 3 and 8. It is a large creature that hangs from the ceiling in certain rooms, recognizable by a faint green glow and dripping green particle effects descending from its position. Unlike Figure — which is blind and tracks by sound — Grumble tracks movement. If you move while Grumble is looking at you, it spots you. If you freeze, it does not. This is the fundamental counter. The detection range is approximately 50 studs. Grumble’s patrol cycle is roughly 13-18 seconds: it stares in one direction for 8-12 seconds, then moves to a new ceiling position over 2-3 seconds, then stares again. During the repositioning window, Grumble’s detection is disabled — it cannot spot you while moving between positions.

The Grumble entry protocol: enter any Mines room. Before scanning the walls, before checking for closets, before looking for the exit — look straight up. If you see green particles or a green glow, Grumble is above you. Freeze immediately. Do not take one more step. Wait and watch. Grumble will move to another ceiling position within 8-15 seconds. The moment it begins repositioning — you will see the glow shift — walk to the exit. Walk, do not run. Running creates noise and, while Grumble does not track sound, it can alert other entities. Grumble has a 2-second reaction delay after arriving at a new position, giving you a brief safe window. One detection is recoverable — freeze, wait, move when it repositions. Two detections usually means you are dead because Grumble’s patrol cycle compresses after the first detection.

Open caverns are The Mines’ most dangerous room type and the reason Sprint Potions are mandatory. An open cavern is a large irregular room with stalagmites, uneven terrain, and absolutely zero hiding spots. No closets. No beds. No side rooms with doors. When Rush screeches in an open cavern, you cannot hide. You must sprint back to the previous room’s closet within 3.5 seconds, or use a Sprint Potion for guaranteed escape. Open cavern protocol: as you leave every room that contains closets, mentally note its position — “last closet: 2 rooms back, left wall.” When you enter an open cavern, verify you know where the last safe closet is before proceeding deeper. Sprint Potions are your open-cavern insurance. Do not use them to skip a 15-second walk between rooms. Use them when you would otherwise die. One Sprint Potion in your inventory when Rush screeches in an open cavern is the difference between surviving and wiping.

Giggle swarms appear around Rooms 8-12. Individual Giggles deal 5-8 damage per hit. A swarm of fifteen to twenty can drain your entire health bar in seconds if you try to fight them. The correct response to Giggles is the opposite of what the Hotel taught you. The Hotel taught you to face every threat — look at Screech, hide from Rush, outsmart Figure, navigate around Eyes. Giggles are the first entity in DOORS where the correct response is “run away.” Sprint through the room. Do not stop. Do not fight. Giggles are slow and cannot catch a sprinting player. If you are trapped between two swarms, use a Sprint Potion and break through the smaller one. The players who die to Giggles are the ones who stand their ground, trying to fight, and die to accumulated chip damage over 15 seconds that they did not realize was lethal until their health bar was already gone.

Gloom appears around Room 15 and functions similarly to Screech from the Hotel, but in a Mines context. The room goes pitch black — darker than Hotel dark rooms. You hear a whisper from a random direction. Spin 360 degrees smoothly until you see Gloom’s eyes, then look directly at them. Same counter as Screech. The difference: Gloom rooms are larger and have more obstacles, making the spin harder to execute without bumping into terrain. Use your flashlight to briefly illuminate the room layout before Gloom fully darkens it. Then spin, find the eyes, and move to the exit.

The transition from Hotel to Mines is the hardest skill check in Pressure. Not because the Mines entities are mechanically more difficult than Hotel entities — Grumble is easier to counter than Figure, Giggles are easier than Ambush, Gloom is identical to Screech. The difficulty comes from the Hotel training you to do things that get you killed in the Mines. Looking around every room before moving? Death — Grumble spots you. Assuming every room has a hiding spot? Death — open caverns exist. Following Guiding Light exclusively? Death — some Mines rooms have no sparkles. The Mines is not harder than the Hotel. It is different. The players who treat it as “the Hotel but underground” die. The players who treat it as a new game, with new protocols that must be learned from scratch, survive.

The Mines adaptation follows a predictable pattern. Every player goes through the same sequence: denial (“this is just the Hotel underground”), frustration (“why do I keep dying to Grumble”), acceptance (“I need to look up”), and mastery (“I cleared to Room 50”). The only variable is how many runs you spend in each phase. The players who read guides like this one spend 5 runs in denial instead of 20. That is the value of knowing what is coming before you experience it.

A Hotel veteran with 200-plus hours tracked their first 20 Mines runs. Runs 1-5: died to Grumble every single time, always before Room 8, always because they scanned the room horizontally before looking up. Runs 6-10: survived Grumble but died to open-cavern Rush encounters, always because they did not track the last closet position and wasted 2 seconds searching for a hiding spot that did not exist. Runs 11-15: survived Grumble and open caverns but died to Giggle swarms by trying to fight them instead of sprinting through. Runs 16-20: cleared to Room 25-plus consistently. The adaptation timeline is predictable. Grumble takes 5 runs to internalize. Open-cavern awareness takes 5 more. Giggle counterintuition — running away instead of fighting — takes 5 more. By run 20, the Hotel habits are replaced with Mines protocols. The players who quit at run 5 because The Mines feels impossible are quitting one adaptation cycle before it clicks. Do not quit at run 5. By run 20, you will wonder why Grumble ever seemed hard.