Autodesk Crosswalk 5.1 can be downloaded from this link:
The software installer setup_Crosswalk_5.1_windows.exe cannot be deployed silently because does not support any silent switch ex: /s /q
To resolve the issue you should extract this exe file using Universal Extractor.
WinZIP, WinRAR, 7zip cannot extract this exe file.
After that in the extracted folder you can find setup.exe file and you can use setup.exe /s command to deploy this software silently.
For Silent uninstall this command can be used:
setup.exe /uninstall /s
There is another uninstall string for Crosswalk:
C:\Program Files\Autodesk\Crosswalk5.1\Setup\setup.exe -runfromtemp -l0x0009 -removeonly