Controls:

Arrow Keys to move the player; WASD to move the drone.

Q to throw grenades

E to equip and shoot revolver

F to equip and shoot SMG

Y to unequip all weapons

Drone Controls

Z to summon drone; X to destroy it.

Press C for the drone to fire bullets, press Spacebar for it to fire lasers.

If you're really smart, you can also use them like an elevator.