Amnesia crash at start

[Slanderous]

Update the graphics drivers, if that fails reinstall the game. Sorry, i'm retarded.
Might be an issue with 1.3 patch, try perhaps to install 1.2 over the current one (steam updated the game to 1.3 automatically i beleive)
Also, if that fails, uninstall the game again, but before you launch it after the 2nd reinstall, install the 1.2 patch.

Here is 1.2 patch

If those steps fail we can talk via pm