I kind of ran out of time, so the story isn't clear.

Basically, these aliens kidnapped you and were about to kill you, but (for perfectly logical reasons) you had a bunch of alien gut spiders. They don't hurt you, but they kill the aliens on contact.

Use arrow keys to move. Press and hold WASD (or their dvorak equivalents) to grab and drag stuff around.

Grab a portal to activate it. You can teleport objects with you by grabbing the portal with one hand while holding an object with another hand.

Some portals need a key to turn on the power.

Grab the cannons to shoot a lightning bolt.

There's also a ghost that can grab things, and it copies whatever you do. Find it and set it free: you'll need it to escape!