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Keys

How to open doors

Your own door uses a lock, a chain, and a peephole. Other doors need a key or a tool that footage actually shows.

Official thumbnail of the apartment hallway you cross between doors
Official bathroom thumbnail, the kind of room a supply run passes through

On your apartment door, F locks or unlocks, R uses the peephole, and T puts the chain on or takes it off. With the chain set, the door opens only a crack. Look, listen, unchain, unlock, then open.

The home plate in a clear frame reads 3004. A subtitle places Daniel at 303 next door, which one wiki writes as 3003. I keep both wordings and do not pick a single plate for him.

An apartment key shows up in a key dish during a Russian-language run and opens that apartment. A screwdriver takes the four screws off a vent cover so you can crawl through. The Locksmith pass also starts you with a screwdriver and nine bobby pins.

A wrench is for bolted vent covers and pipe fixtures. One player says they need a wrench for a particular cover, and a tips video puts 'find wrench' in the title. A bolt cutter cuts chains and padlocks. Two videos and a written guide name it.

Arthur says the roof key is on the bench. The camera does not show the pickup. A triangular key is mentioned for an out-of-service elevator panel. After the power cut, the elevator is useless anyway, so stairs and vents are the routes people actually walk.

Locksmith is a class pass, not a free tool. The public description says lockpicking is more forgiving and that you start with the screwdriver and pins. I have no footage of the lockpicking screen, so I am not adding success rates.

Keys and tools
ItemWhat it doesStatus
Apartment keyOpens that apartment1 source
ScrewdriverVent screws; Locksmith starter tool2 sources
WrenchBolted vents and pipes2 sources
Bolt cutterChains and padlocks3 sources
Roof keyArthur says it is on the bench1 source
Triangular keyElevator panel; spot unknown1 source
Maintenance keyNo mention in this game's footage or pass textQuery only

Questions

Where is the maintenance key in 30 Floors Up?

Public footage, pass text, and the game description do not name a maintenance key. A video called All 3 Maintenance Keys is about THRESHOLD, a different Roblox game.

How do I open a chained door?

A bolt cutter is what recorded runs use on chains. The chain on your own door comes off with T.

Sources

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