angular graphics
Banned
If the SteamOS version isn't updated, you have to ask some serious questions about what's going on. You'd figure these games are amongst a few that are meant to set an example of what to expect.
Many early ports will be like that because they can't afford to put the same amount of effort they put into the Windows version.
The fact a graphically demanding game such as Metro: LL even has a Linux port is major news. Even if it's subpar it's a big thing. For now..