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"There are people, even some of my own staff, who say I am a monster for what I brought to this station. They say the Marker is manipulative - that it influenced my decisions. They don't understand that what I did, I did for this community - for our species. Titan Station was a dead husk before I breathed life back into it with government research grants. That research - into unimaginable sources of energy, into manufacturing techniques and efficiencies far beyond all previous understanding - is the only hope that remains for mankind. We have relied on destructive planetcracking for far too long and now we can no longer sustain ourselves. We need the Markers to survive. If we fail in our efforts to understand them, there is no hope left for humanity."
—Tiedemann's justification for Project Telomere.[1]

Hans Tiedemann was EarthGov's Director of Operations on Titan Station.[1] He was responsible for overseeing Project Telomere, a research program that led to the creation of Red Marker copies on the station, most notably the massive Site 12 Marker.

As the highest civil authority on the station, Tiedemann ordered the evacuation of the station once he became aware of the Necromorph outbreak that spread from below in the Titan Mines


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A poster found on the Sprawl.

"Don't you dare tell me what I can and cannot do on my own station. My grandfather was running this place long before you were crapping your diapers, young man."
—Tiedemann to one of his staff.[2]

According to one of the audio logs left in the Government Sector, Tiedemann claimed that his grandfather had been running Titan Station long ago, and that he himself had spent his entire life in service of the station's residents, caring deeply for their safety.

Necromorph Outbreak[]

After Engineer Karrie Norton unwittingly unleashed the Necromorph infection in the Titan Mines, Tiedemann led Karrie throughout Titan Station's underbelly, citing that it was her responsibility to fix the damage that she had caused in the Government Sector. He showed no signs of knowing about Tyler Radikov's influence on Karrie's actions.

When he discovered that she had shut the power down to the automatic seals of the station, Tiedemann ordered Karrie to go to the station's reactor core before it overheated and destroyed the station. Karrie managed to destroy the cause of the Core's problem, a massive Necromorph, but was severely injured in the process. Tiedemann did not respond to her hails when she attempted to tell him that she had neutralized the problem in the Reactor Core. He may have not been able to hear the call.


"How did an evacuation get authorized? Tiedemann's going against every protocol for this situation. Now it's too late to stop it, and there's just a mad dash to get everyone off! He must feel responsible for what's happening, and is trying to save as many as he can."
—Sergeant Armand Fattouh[3]

Dead Space 2 - Hans Tiedemann

Tiedemann proving loyalty to the Sprawl by warning and evacuating citizens.

Unable to control the outbreak, Tiedemann declared martial law and ordered an immediate evacuation of all personnel aboard the station. In succession, he also ordered the Titan Station Security Force to eliminate all "key subjects" tied to the Marker research project which included Isaac Clarke, Nolan Stross and Lexine Weller. Graffiti-covered posters of him could also be found in numerous locations, suggesting that he was not loved among the station's population and primarily the Unitologist portion of it.

Hans Tiedemann - Chapter 10

Tiedemann in a video transmission to Isaac, Ellie and Stross during the outbreak.

Tiedemann was Isaac Clarke and Ellie Langford's primary opposition in their escape from Titan Station, and he utilized numerous automated subsystems as well as teams of Security Officers to halt Isaac's progress throughout the station. During these events, Tiedemann was contacted by his superior in the government and the head of EarthGov's Marker project, the Overseer. The Overseer sent a log detailing disappointment in the station's illegal evacuation and promising retribution against Tiedemann for authorizing it.[4]


"The research in that Marker is worth every life we just lost! I won't let you throw all this away!"
—Tiedemann confronts Isaac.

After hampering Isaac at every turn, Tiedemann retreated into the Site 12 Marker chamber as his security forces battled the Necromorphs that Isaac had let into the Government Sector. When the Necromorph horde poured into the room, Tiedemann took refuge at the base of the Marker, inside its dead space where the creatures could not approach him. When communicating to Isaac via RIG link, Tiedemann tried to defend his protectiveness of the Marker and the validity of the research into making it, insisting that EarthGov was close to figuring out a way to control the Marker's power. At the same time, the Marker initiated a Convergence Event and released intense bursts of energy, leaving Tiedemann badly burned down his right side to the point that his skull and muscle tissue were showing, and even burning Marker Symbols into his flesh.

DS2 Tiedemann vs Isaac

A half-burned Tiedemann confronts Isaac in front of the Marker.

DS2 Tiedemann Death

Tiedemann's demise.

In a rage, Tiedemann shot Isaac in the chest and hand with a Javelin Gun as he approached the Marker. He declared that the research into the Marker was worth the loss of life suffered during the outbreak, and that he would not let Isaac waste it. Isaac, however, gained the upper hand, swiftly breaking Tiedemann's arm and disarming him, and then proceeding to use Tiedemann’s own Javelin Gun to fatally shoot a spear into his neck.

Isaac could then choose to execute the dying Tiedemann with a shot to the back of the head which would decapitate him, electrocute him with the Javelin Gun's secondary fire, or shoot him anywhere else in the body. Isaac could also leave Tiedemann to succumb to his wound.[5]


"I have spent my whole life in service of this community and I will not stand here and watch them die for some project protocols! Now get to your shuttle, we can argue about this nonsense in court, assuming we both live to discuss your precious protocols."
—Tiedemann to one of his staff after his illegal evacuation order.[2]
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An EarthGov poster featuring Tiedemann.

Despite his numerous attempts to kill Isaac and his heavy handed attitude, Tiedemann saw himself as a protector of the station's residents, stating that his family had a long-standing history as the runners of the station and that he wanted to protect the population from the Necromorph outbreak, regardless of orders.[2] He was ultimately responsible for ordering the evacuation in an attempt to save as many people as he could from the Necromorph outbreak on the station, despite violating EarthGov orders and laws.[3]

Tiedemann also believed in the Marker's promise of endless energy as it was seen when he exclaimed to Isaac that the outbreak was not EarthGov's fault and they were so close to harnessing the Marker's energy instead of destroying planets to collect resources. In a log left behind by Tiedemann, he made insights that humanity's reliance on destructive planet cracking would render humans extinct unless they could learn how to understand the Markers.[1]

Tiedemann appeared genuinely sorry for his need to combat Isaac, apologizing to him regularly and even remarking that Isaac's resourcefulness and determination would be admirable "in more favorable circumstances".[6] Eventually, Tiedemann's empathy progressively waned as he became more frustrated with his situation and finally morphed into violent anger as Isaac allowed the Necromorphs to breach the Government Sector, butchering his men and allowing them to reach the Marker.

Death Scenes[]

  • If Isaac fails to pull out the first Javelin, he will fall to his knees in pain. Tiedemann then shoots another Javelin through his neck. While Isaac is sitting helplessly choking from the Javelin, Tiedemann shoots a third one through his head and completely decapitates Isaac.
  • If Isaac succeeds in pulling out the first Javelin but fails to do so with the second, Isaac will fall to his knees trying to pull out the bolt. Tiedemann shoots a Javelin in Isaac's shoulder and another one in the side of Isaac's head and completely decapitates him.
  • If Isaac succeeds in pulling out both Javelin bolts, Tiedemann will aim the Javelin Gun at Isaac's head and shoot, but Isaac dodges and grabs hold of Tiedemann's arm and breaks it. He takes the Javelin Gun and fires a bolt in Tiedemann's neck, causing him to fall to his knees, choking. Isaac loads another bolt in the gun and takes aim. The death scene is different depending on the player's choice:
    • If the player chooses to aim at the head and fire, Isaac will shoot a Javelin in Tiedemann's head, decapitating him. However, shooting him in the back or shoulder will just make him fall over dead with 2 bolts in him.
    • If the player chooses to use the secondary fire, Tiedemann will be electrocuted and fall to the ground burning.
    • If the player misses the shot or simply chooses not to fire, Tiedemann will choke and fall to the ground, dead.


Hans symbols DS2

Marker Symbols on Tiedemann's forehead spelling "PAIN".

  • Lester Purry provided his voice and likeness to Tiedemann.
  • Symbols much like those that adorned the Marker could be seen etched into Tiedemann's burned forehead during his last encounter with Isaac. This was especially noticeable when he attempted to launch the final Javelin Spike into Isaac's head. When translated, they read "pain".
  • Strangely enough, if one pays close attention, it appears as if Tiedemann still has some health left after choking to death/being shot by Isaac. His RIG bar still displays a small (red, critical) fraction of health left and does not reduce to zero. This is likely the result of a glitch, as several other characters' RIGs including Isaac Clarke's will still display the amount of health that they had before death if the characters are killed too suddenly.
  • In the multiplayer mode of Dead Space 2, Tiedemann served as the supervisor of a security force unit, instructing and providing directions to the squad as they proceeded with their objectives.[7]