Yes it's from the HL2 guys.

[Sandwich Man]

I can't even tell you about all the people accusing Dishonored of ripping off Half Life 2. They both had Viktor Antonov as head art director, people!
It explains so much:
The tallboys looking like striders
The walls, the city in general
The assassins looking like combine
The name Anton Sokolov

[Snacks the sober sea lion]

People actually say this?

[bluz74]

Dishonored = HL2 + Bioshock +Deus Ex: Human Revolution

[bvguthrie]

Originally posted by bluz74:

Dishonored = HL2 + Bioshock +Deus Ex: Human Revolution

Actually, it's Thief: The Dark Project + Deus Ex + Dark Messiah of Might and Magic + Half-Life 2 + Bioshock. :-)
If anyone cares about my reasoning, it is as follows: Portions of the storyline and lore are based on Thief; the Overseers are like the Hammers, Whaler training quotes from the Thief tutorial, the player character is betrayed after accomplishing a major objective, then has to recover and get revenge, and so forth. Like Deus Ex, the gameplay allows you a variety of approaches to each situation, including the option to not kill anyone, and rewards exploration with both loot and lore. The movement, fighting system, adrenaline, Dark Vision, and a few other things come from Arkane's previous game Dark Messiah of Might and Magic. The visuals obviously come from Half-Life 2. Bioshock influenced the Runes and Bone Charms, which correspond to Plasmids and Gene Tonics.

[Mithrandir]

Not surprised, people like there controversy. There's nothing wrong with borrowing elements from a great game (especially if they share parts of the dev team), but its true the similarity Tall Boy/Strider is a little too obvious. And going back to the op, I wouldn't say that the city is similar but the walls of light definitely are :-)

[Chris Solomon]

my opinion: dishonored= dark forces 2+ Bioshock + Spinter Cell

[forth]

my opinion: FROGGER

[Veliki Gospar]

Is that supposed to be a bad thing?

[Dr. Slaughter]

My theory: Dishonored is the Combine soldiers home planet during that species dark ages

[Zoomii]

Originally posted by musixauce3000:

My theory: Dishonored is the Combine soldiers home planet during that species dark ages

Nice necro

[PsychoDino]

Originally posted by Sandwich Man:

I can't even tell you about all the people accusing Dishonored of ripping off Half Life 2. They both had Viktor Antonov as head art director, people!
It explains so much:
The tallboys looking like striders
The walls, the city in general
The assassins looking like combine
The name Anton Sokolov

better than hl2