Game Crashed.

[Romulator]

I believe this crash is the resultant of the 131111 patch having some problems with

Spoiler below!

the brute spawning.

To do a Steam Integrity Check:

Steam File Integrity Check

1. Right-Click the game in your Steam library
2. Click "Properties"
3. Navigate to "Local Files" tab
4. Click "Verify integrity of game cache"

If that doesn't work, you'll need to reinstall it.