Amnesia won't open

[ThePhrygian]

I just got Amnesia: The Dark Descent about 2 weeks ago. Game ran fine and everything. Steam went through an update today. When it finished, Amnesia won't open no matter what I do.
I tried verifying the integrity of the game cache, updating my drivers, reinstalling the game, etc. Pretty much everything.
Here are my specs:

Processor
Intel® Core™ i7-4500U CPU @ 1.80GHz
Manufacturer
Intel
Speed
2.4 GHz
Number of Cores
4

Video Card 1
Intel® HD Graphics Family
Manufacturer
Intel
Chipset
Intel® HD Graphics Family
Dedicated Memory
2.1 GB
Total Memory
4.0 GB

Video Card 2
AMD Radeon HD 8870M
Manufacturer
ATI
Chipset
AMD Radeon HD 8870M
Dedicated Memory
2.1 GB
Total Memory
[/size][/font] 2.1 GB

Memory 16 GB

Operating System Microsoft Windows 8 (build 9200), 64-bit
Service Pack 0
Size 64 Bit
Edition Basic

Display Maximum Resolution 1920 x 1080

DVD HL-DT-ST DVD+-RW GU90N

CD HL-DT-ST DVD+-RW GU90N

Drive
Size 922.5 GB
Free 782.6 GB

[jens]

Please check the troubleshooting guide for solutions and follow problem x if nothing helps.

[ThePhrygian]

Didn't work.
Here is my hpl.log


  hpl.log (Size: 9.62 KB / Downloads: 203)

[Mudbill]

It looks like you're trying to start a custom story. Maybe you've tried to set up the development environment, but it fails to directly load your story on startup?

[plutomaniac]

To play the main game again:

1. Reinstall game or do a file integrity check via Steam (Problem I)
2. Check Problem A3 on how to reset game settings