void Main()
{
    ControlCharacter control = new ControlCharacter();
    control.GetType()
           .GetMethods(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly)
           .Where(method => method.GetCustomAttribute<RPC>() == null)
           .Select(method => method.Name)
           .ToList()
           .ForEach(Console.WriteLine);
}

[AttributeUsage(AttributeTargets.Method)]
public class RPC : Attribute
{
}

public class NetworkBehavior
{
}

public class ControlCharacter : NetworkBehavior
{
    [RPC] 
    public void Move() { }

    public void DrawHud() { }
}