Urban Explorer (alternative title: The Depraved) is a 2011 German horror film. A group of four young tourists meet up to explore the undergrounds of Berlin, led by local German guide Kris. When he gets injured, the group is on their own to find a way out of the labyrinth of tunnels and save his life, until they meet East German veteran border guard Armin who offers them their help. Unfortunately for the group, Armin turns out to be an insane killer.
Urban Explorer provides examples of the following tropes:
- Big Labyrinthine Building: "Beneath Berlin extends a system of over 25,000 tunnels. Two thirds have already been permanently sealed. Some areas haven’t been entered for more than 60 years."
- Big Bad: Armin, a delusional, murderous, border patrol veteran who maintains a torture chamber and sabotages everyone's chances at escaping.
- Bit Part Bad Guys: The group encounters two sketchy looking guys with a dog, who then start to attack and harass them, demanding to hand out the camera Marie carries with her. Kris later suspects them to be criminals hiding something underground.
- Cannibal Larder: Armin's "kitchen" is filled with human meat, discovered by Denis.
- Cell Phones Are Useless: Denis is trying to use a cell phone to get help, but since he's underground, his attempts are futile.
- Claustrophobia: The movie takes place in a system of sometimes very narrow underground tunnels.
- Cold-Blooded Torture: Armin maintains his own torture chamber underground, where he "interrogates" Lucy. He also kills Denis using a gruesome torture method that he has learned during war, which involves skinning the victim's torso.
- Cut Phone Lines: Armin cut the phone lines, making it impossible for Denis to use the phone.
- Developing Doomed Characters: It takes quite a while before they actually get in trouble.
- Dwindling Party: Hunted by Armin, one by one is killed.
- Evil All Along: To Denis and Lucia, Armin seems like a helpful guy at first, helping them to get Kris out of the pit and giving them food. He's then revealed to be a serial killer.
- Final Girl: Subverted. Lucia gets close to escaping as the last person of the group, first by meeting a man at a subway station who gets killed by Armin when trying to get help, shortly after when she manages to get onto the train, and lastly when Armin's gun malfunctions.
- I Ate WHAT?!?: Denis finds out that the food served by Armin was human meat, most likely of Juna whose head he finds in the fridge, resulting in a Vomit Indiscretion Shot.
- Idiot Ball:
- Marie taking a pic of Kris while he's trying to cross the pit, the bright flash causing him to lose balance, making him fall and break his leg.. It's the cause of everything bad happening afterwards.
- Not making sure that Armin is dead while he's lying on the floor, unconscious.
- Let's Split Up, Gang!: The group splits up several times, making things easy for the killer.
- Multinational Team: The main group of urban explorers are tourists visiting Berlin. Their guide, Kris, is German, Lucia is from Venezuela, Juna is Korean, Denis is American and Marie is French.
- Mutilation Interrogation: Armin straps Lucy to a chair, threatening to cut off her nose if she doesn't answer his questions and attempting to cut off her ear, but is stopped by Denis.
- Neck Snap: Armin necksnaps Lucia using his bare hands.
- Not Quite Dead: After Denis shoots Armin, he tries to kill him by hitting his head several times using a metal pole, but he fails and Armin comes back to kill the escaping Denis and Lucia.
- Sinister Subway: The system of tunnels is connected to the metro system of Berlin, where some scenes of the movie take place.
- The Bad Guy Wins: Although Kris probably survives, Armin managed to kill the rest of the group, and is seen victoriously brushing his teeth in the last scene of the movie.
- My Hovercraft Is Full of Eels: In the opening, Juna, whose first language is Korean, tells Marie that she hopes her boyfriend commited suicide, but it's probably not what she meant to say.
- The Schizophrenia Conspiracy: While interrogating Amy, Armin suspects her off being part of an organization, showing the viewer that he's obviously insane and paranoid.
- Waking Up Elsewhere: Denis wakes up strapped to a bed after being injected with narcotics by Armin.
- You Have to Believe Me!: When Armin is pretending to be a ticket inspector on the subway train, Lucia starts screaming hysterically that he's trying to kill her, but is ignored by the other passengers. Everything is complicated by the fact that she doesn't speak German and starts insulting the English speaking passenger that could have helped her.
