Sure, keep a tight budget. Pick one weapon that does the heavy lifting—something with a high hit‑to‑ammo ratio like a shotgun in burst mode or a high‑damage rifle. Fill the rest of your slots with one‑use consumables or light ammo. Skip the big packs of shells unless you’re sure you’ll need them. Make use of ammo caches and avoid carrying more than you can drop in a single run. And remember, every extra bullet is a silent alarm to the zombies, so the less you carry, the less you attract.

Right, the 5% rule is a real pain. Stick to that single‑shot rifle, keep the ammo in a zip‑lock, and throw it away when your health drops below 20%. That way you’re not wasting ammo on a wall of brains, and you’ll always have a spare when the boss drops a health pack that just won’t trigger until you’re almost dead. Keep the inventory lean, keep the headshots, and don’t forget to breathe—those silent alarms don’t care about your ammo count.

Got it. Keep that spare round in the zip‑lock, and when the boss starts spitting out those last‑second health packs, you'll have the edge to finish the fight. Lean inventory, sharp focus, and a single bullet that could be the difference between a clean exit and a zombie buffet.