Now that the spaceship's fixed let's think about the essentials we need on this kind of journey - supplies! Collecting them with our spaceship would be tedious, but, as always, technology is the answer. We'll build a space shuttle.
Now, in order to open the gate, Diggy needs to push two blue buttons. But first, place the boulder on the buttons, as shown in the picture below:

Then, push the red button:

Let's do the following steps:
- plug in the shuttle making machine π
- bring seven metal sheets from the molten metal items we brought from Earth ποΈ
- turn the machine on to create a piece of the shuttle π¨βπ§
In order to plug in the shuttle making machine, check the plan laying on the table and place the electric boxes in the proper place:

Then, enter the exit and melt 7 metal items with the red laser by stepping on the button. Please note that you need to use the mirrors in order to destroy red crystals and melt the metal items:

Once you melt the metal item get the metal sheets:

In order to activate the red light permanently, use the boulder, and place it on the button:

Then you can melt the rest of the metal items...

...and bring it to the machine:

Now, push the red button:

You made it! Now move the unfinished shuttle to the next hall by pushing the blue button:

Careful, until you move the unfinished shuttle to the hall, Rusty can't let you pass. Push the next blue button:

Great, now do the same thing again:
- plug in the machine π
- collect seven metal sheets from the molten items ποΈ
- turn on the shuttle making machine π¨βπ§
In order to plug in the shuttle making machine, check the plan laying on the table and place the electric boxes in the proper place:

Then, enter the exit and melt 7 metal items with the red laser by stepping on the button. Please note that first, you need to place the red electric boxes in the proper place in order to be able to activate the red laser.

In order to activate the red light permanently, use the boulder, and place it on the button:

Bring the metal sheets to the machine:

Puh the red button:

You've managed to build the space shuttle π