There's a big lump of gold floating around in that asteroid over there. You should go get it, and bring it back here to the wormhole.
Watch out for pirates, though. They are hungry for hold as well.
As for a weapon, you can use your hook to any two object and magnetize them, to come crashing together. With enough force any ship will break.

Move: WASD
Fire/Release: J/L
Reel line in/out: K/I
Magnetize attached objects: H
Restart: R

If you feel like hacking the game, you can edit the ship properties in the ships.yaml file.