1. Ahead is a staircase going down. Avoid the guard and do just that.
2. Throw the penguin as near you can at the camera, then hide to let the fuss die away.
3. Sneak to here. Looks like my throw was pretty lucky! You need to be quick though - cloak and get into the vent under the camera. Retrieve your penguin when it’s safe or throw it past the lasers (causing more suspicion, but you’ll be safe in the vent).
4. Follow the vent for a 200XP bonus and come out in this room. A weapons case contains a Tesla cartridge. Disable the lasers to retrieve your penguin, and return here.
5. A guard to the right here will stay seated if you don’t disturb him. More difficult are the two up ahead.
6. As you approach they chat and then settle into a routine where one patrols and the other leans against a machine. This crate is a good place to wait. The vent upper-left is where you need to be.
7. You will notice that jumping while carrying the penguin is noisy! It regularly alerts the patrols, so I recommend you save often. Get up onto these boxes and the ledge immediately above the crate you hid behind, and follow it round to the vent.
8. I eventually get the penguin into the duct, and follow him in.
9. At the far end of the vent, this surreal sight!
10. Place the Penguin Prince in his rightful place, and your prize is revealed.
11. Retrace your steps unless you just want to finish the mission, in which case head through the vent, opposite. You can sneak round to the left over the bales to reach it.
12. I want to do some more exploring, so I sneak back through the vent to here, under the camera that was a penguin target earlier.
13. I recloak and go back up the stairs.
14. And back to this point, then resume where I left off.