Fifty waves come up one road, and you never aim a shot. You put pieces beside the road and try to keep their barrels from cooking.
●Four mounts sit on the shoulder. A mount holds one piece, and only one.
●Every piece heats while it fires. Run one hot and it vents — a venting piece is a hole in your line.
●A relay fires nothing. It cools what stands next to it and reaches further than it looks.
·The works take one mount away every eight waves, and mark it two waves early. The road never changes — what you can put beside it does.