Level of risk associated with sharing administrative login?

[dark_spectre]

With my current configuration situation as of yet still unresolved, how much do I risk exposing by providing my administrative login should I unwittingly/unknowingly provide administrative privileges to a wolf in Samaritans clothing?

Steam login info? db credentials? root level access etc, etc?

[PCGamersportal]

If you give admin options you can set them as sub admin and limit what they have access to.

[Raizio]

Steam login info, they won't need it.

root level access. Sure, make backups of whatever would be easy to restore for you. Change password, give them that password, let them mess around and fix things. Then change password back.