So I had the chance to play Receiver on my buddy's computer for a few hours and I like it so far, but definitely not easy. Being as careful and tactful as I could, but still got insta killed by a flying tazer that was too quick for me. So a quick idea I felt like doodling was a stun baton type weapon that used battery pack ammo for disabling a robot, or if there isn't any ammo, a club to buy you some distance.
The ammo could be scarce as the idea is that with a cartridge, you could one-shot-kill a robot. You could either start with the baton and without the gun or vice-verse.
The game has a really interesting mechanic to it that I would love to see applied to more items.