I really like the concept of collecting scrap to craft upgrades, but I never seem to find any scrap beyond the first room, so i couldn't craft any. E.g. when I got the double jump blueprint, I didn't have enough hard scrap to build it, and couldn't get out of that immediate area without building it.
I.e. it feels like I'm missing a mechanic. How does one collect scrap? It says you attack robots to do so, but I've tried to shoot at everything that might be a robot to no avail.