for 10: grab bomb, place on moving thing, grab 2 more and destroy crates blocking the entrance, take spider+bomb, launch it at the moving thing that faces the green button
-you can destroy both bot and green button with just one if you place it carefully-
take a spider and launch it so that it triggers all the bots, take that spider and put it somewhere safe, place bomb so it destroys crates partially and them bomb the bot to the lower left, bomb the crates above destroyed bot, get mirror...etc
for 15: apparently you can mix spider+mirror+rocket, so do that and launch it, then create a mirror+spider, launch a spider at the green button, get the battery from top left, place spider-mirror so that spider on button is destroyed, place crate in path of laser @ bottom left so that the fire engine moves, fuse spider+battery and launch the battery at the moving thing from the place the fire engine was at, grab bomb and destroy crate at entrance, voila.