Any help here?

Do you have the console enabled? I don't think the code will work unless the background map is open, and that doesn't happen when the console is enabled.

You must use the arrow keys (not the WASD keys)

Done all those things before I started this thread.

Are you sure it didn't unlock? Maybe the achievement window didn't pop up but if you search for the achievement in the menu it appears as completed.

Also: Make sure you are connected to Steam and the Internet when you input the code.

All those things I have done, I have even used the Achieve_Mono_Adventurer command and not even that works!

EDIT: Hang on, I know what I did wrong, I read tschumann's post and I realised I have the console on. XD