Speak with Miss Fanny at Stoneplow. Then, with her help, defeat the Mantid Colossus.
That commander speaks hastily. He has the weapon he needs to win this battle. He has YOU.
"But it's too hard," you might say.
You would be wrong. It is not too hard. NOTHING IS TOO HARD.
Go now, <name>. Go, and save Stoneplow!