PC specs:

Operating System: Windows 8 Pro with Media Center 64-bit (6.2, Build 9200) (9200.win8_gdr.130306-1502)
Language: English (Regional Setting: English)
System Manufacturer: Acer
System Model: Aspire 5749Z
BIOS: InsydeH2O Version V1.08
Processor: Intel(R) Pentium(R) CPU B960 @ 2.20GHz (2 CPUs), ~2.2GHz
Memory: 4096MB RAM
Available OS Memory: 3948MB RAM
Page File: 1810MB used, 6105MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.02.9200.16384 64bit Unicode

Video specs:

Card name: Intel(R) HD Graphics
Manufacturer: Intel Corporation
Chip type: Intel(R) HD Graphics Family
DAC type: Internal
Device Type: Full Device
Device Key: Enum\PCI\VEN_8086&DEV_0106&SUBSYS_06231025&REV_09
Display Memory: 1760 MB
Dedicated Memory: 128 MB
Shared Memory: 1632 MB
Current Mode: 1366 x 768 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: unknown
Monitor Id: LGD02DC
Native Mode: 1366 x 768(p) (59.996Hz)
Output Type: Internal
Driver Name: igdumd64.dll,igd10umd64.dll,igd10umd64.dll,igdumd32,igd10umd32,igd10umd32
Driver File Version: 9.17.0010.2932 (English)
Driver Version: 9.17.10.2932
DDI Version: 10.1
Feature Levels: 10.1,10.0,9.3,9.2,9.1
Driver Model: WDDM 1.2
Graphics Preemption: DMA
Compute Preemption: DMA
Driver Attributes: Final Retail
Driver Date/Size: 12/12/2012 17:42:36, 12615680 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B78E66-4246-11CF-E178-2926B7C2C435}
Vendor ID: 0x8086
Device ID: 0x0106
SubSys ID: 0x06231025
Revision ID: 0x0009
Driver Strong Name: oem6.inf:5f63e534c4a533dd:iSNBM0:9.17.10.2932:pci\ven_8086&dev_0106
Rank Of Driver: 00E02001
Video Accel: ModeMPEG2_A ModeMPEG2_C ModeWMV9_C ModeVC1_C
DXVA2 Modes: DXVA2_ModeMPEG2_VLD DXVA2_ModeMPEG2_IDCT DXVA2_ModeWMV9_IDCT DXVA2_ModeVC1_IDCT DXVA2_ModeH264_VLD_NoFGT
Deinterlace Caps: {BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC1,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC3,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
{BF752EF6-8CC4-457A-BE1B-08BD1CAEEE9F}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_EdgeFiltering
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend DeinterlaceTech_BOBVerticalStretch
{5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC4,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY VideoProcess_AlphaBlend
D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

From the launcher.txt

2013/04/16 08:58:04:758 INFO r.a: ------------------ VM Info ------------------
2013/04/16 08:58:04:763 INFO r.a: -- OS Name: Windows NT (unknown)
2013/04/16 08:58:04:763 INFO r.a: -- OS Arch: x86
2013/04/16 08:58:04:763 INFO r.a: -- OS Vers: 6.2
2013/04/16 08:58:04:763 INFO r.a: -- Java Vers: 1.6.0_25
2013/04/16 08:58:04:763 INFO r.a: -- Java Home: C:\Program Files (x86)\Steam\steamapps\common\Spiral Knights\java_vm
censored...
2013/04/16 08:58:04:764 INFO r.a: -- Cur dir: C:\Program Files (x86)\Steam\steamapps\common\Spiral Knights
2013/04/16 08:58:04:764 INFO r.a: ---------------------------------------------
2013/04/16 08:58:04:814 INFO r.a: Failed to find proxy settings in Windows registry [error=java.lang.NoSuchFieldError: m_key]
2013/04/16 08:58:04:815 INFO r.a: Checking whether we need to use a proxy...
2013/04/16 08:58:04:820 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/liblwjgl64.so]
2013/04/16 08:58:04:822 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/liblwjgl.so]
2013/04/16 08:58:04:822 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libjinput-linux.so]
2013/04/16 08:58:04:822 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libjinput-linux64.so]
2013/04/16 08:58:04:822 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libopenal64.so]
2013/04/16 08:58:04:822 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libopenal.so]
2013/04/16 08:58:04:823 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libkeybd.so]
2013/04/16 08:58:04:823 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=resource, value=[linux] native/libfroth.so]
2013/04/16 08:58:04:823 INFO r.a: Skipping [quals=mac os x, osname=windows nt (unknown), osarch=x86, key=resource, value=[mac os x] native/liblwjgl.jnilib]
2013/04/16 08:58:04:824 INFO r.a: Skipping [quals=mac os x, osname=windows nt (unknown), osarch=x86, key=resource, value=[mac os x] native/libjinput-osx.jnilib]
2013/04/16 08:58:04:824 INFO r.a: Skipping [quals=mac os x, osname=windows nt (unknown), osarch=x86, key=resource, value=[mac os x] native/openal.dylib]
2013/04/16 08:58:04:824 INFO r.a: Skipping [quals=mac os x, osname=windows nt (unknown), osarch=x86, key=resource, value=[mac os x] native/libfroth.jnilib]
2013/04/16 08:58:04:824 INFO r.a: Skipping [quals=linux, osname=windows nt (unknown), osarch=x86, key=java_location, value=[linux] /spiral/client/java_linux.jar]
2013/04/16 08:58:04:825 INFO r.a: Skipping [quals=mac os x-x86_64, osname=windows nt (unknown), osarch=x86, key=jvmarg, value=[mac os x-x86_64] -d32]
Exception in thread "Getdown" java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:773)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:872)
at java.awt.Toolkit.getEventQueue(Toolkit.java:1689)
at java.awt.EventQueue.invokeLater(EventQueue.java:999)
at com.threerings.getdown.launcher.Getdown.createInterface(Unknown Source)
at com.threerings.getdown.launcher.Getdown.setStatus(Unknown Source)
at com.threerings.getdown.launcher.Getdown.updateStatus(Unknown Source)
at com.threerings.getdown.launcher.Getdown.detectProxy(Unknown Source)
at com.threerings.getdown.launcher.Getdown.run(Unknown Source)

Did re-install it multiple times. Steam opens then closes it, I have no idea want to do next....