It took some work, but you pestered Pete into giving you the power core on one condition - showing him a flying pig.

An actual flying pig is unlikely to be found on Mars - we'll need to make a semi-convincing fake.

For this, we'll need a balloon and a way to fill it.

What do you do with balloons when you're done with them?

A place in town where rubbish goes.

You've likely gone past it a few times in your journeying through town - if not, try looking around the docks.

The dumpsters on the docks - directly left of where you enter them and next to the 'KEEP OUT' sign, 'look' at the trash cans to find the deflated inflatable pig.

We'll need something that balloons are stereotypically filled with.

In short - the helium you're looking for is on the island in the lake. Follow this path of hints to get there.

You can also jump directly to these hints if you've already made it to the island.

Great, welcome back! Combine it with the deflated pig if you haven't already, and return to Pete's front door.

You'll need to beg him for the core again, but when he goes to the window, you can finally show him the fabled flying pig.

It's not home invasion if the owner isn't home! Get inside!