So much depends on your examiner. One may tell you which aproaches you are to do while another will leave it up to you. If given a choice, of course you take vectors whenever you can get them, vectored ILS to vectored VOR/DME is nice, or GPS if you have the capability. Emergencies...well at least you won't have a tough time doing the Single Engine approaches. 😉 Hydraulics off seemed popular, maybe talk through a governor failure. Its a pretty simple platform, so expect to have to talk through just about any of the failures. On the ground you better know alternate minimums, what does two precision approaches on separate runways mean for alternates. BECOMG, TEMPO, and PROB conditions for alternates are also good to know.
If you fly it with a 'competent co-pilot', don't be afraid to let him do most of the flying. Pass control to take clearances, handle emergencies, etc. If you have to do a hold, enter the hold, fly the first turn and pass control. Pass control for approach briefings. You'll be doing the money shot flying, but don't be afraid to use the other guy to whatever extent the examiner will permit. If you do it too much, he'll tell you, but he won't fail you for it. Of course you still have to monitor the co pilot's flying, but its easier than trying to open a plate, talk through an emergency, enter a hold and take an amended clearance all at the same time. Think of it like an autopilot. You use it until the examiner says, 'I'd like to see you do this.'
One last thing. Always listen for the expect further clearance time, and be prepared to explain your actions in a comm failure. A clearance isn't valid without a limit or a time and some examiners will try to trip you up with that. Break a leg!