Here is a tough crackme challenge...

[SSBelmont]

This app appears to have some form of protection that is unidentifiable and implements some form of debugger protection I am unable to bypass using the standard approaches IsDebugger checks etc.

http://rapidshare.com/files/440061158/Valhalla.zip

The challenge is to bypass the protection and to circumvent the logon check and allow access to all tools.