Building a Time Machine 6: Defend, Defend, Defend!

We've received word that aliens plan to attack the Processing Plant. This time, I'll go with you on the OS3A Machine to defend the plant.

During the battle, you won't be able to exit the OS3A Machine. But it was built to attack, so just blast the aliens away!

You must protect the machine for a certain amount of time. If the machine is destroyed, you fail!

Go ahead and start. I'll be right behind you.

You're kidding, right? I can't do this alone!

Whew, that was close. But we did it, thanks to you!

But ugh, why must the aliens attack the plant instead of the base? It's suuuch a long trek to get out here.

I almost died because of you! Try harder this time!