We have the ingredients - now we just need the plant that they'll enlarge.

The game is annoyingly vague about this, so I'll tell you - the crates in the train station have plants inside.

You'll need something to leverage them open.

A crowbar! I'm willing to bet a lot of money that The Bull never leaves home without one.

If you've had a look inside the surveillance room, you might have seen him and Ralf on the cameras.

The only problem - a guard is just... standing there.

Doesn't that guard look a bit... strange? Moreso than usual.

Examine the guard to reveal his identity, then turn your attention to the cameras after getting into the room.

Going outside isn't an option, so you'll need to use the camera to get The Bull's attention.

Every time you touch the joystick, the base's defences move - and the Bull moves along with them.

Pressing a red button is probably a good way to get his attention, too.

When you move the guns to the left, The Bull stands near an open air vent.

Pressing it shoots a powerful laser into the air - anything in the way would be devastated.

When the guns are on the right, pressing the red button destroys a crate that has a crowbar inside.

Moving the guns to the left will put the bull next to the crowbar and vent.

In the vent junction, you can 'talk' to the ventilation tube on the right to have the Bull throw the crowbar down to you.

The crowbar can bust open the crates in the train station to reveal... corn!

All we need now is a good distraction.