I regards to the blokes that take almost nothing. If, given the likely weather forecast and the environment you are hunting in you are confident you could spend a unplanned night out in the bush then go for it. In summer in lowland bush this is probably ok. If not then you are one broken leg away from dieing of hypothermia. If you read the tales if the blokes who get in trouble the descriptions of how they pass the time while in major pain make for grim reading. Painkillers would be worth their weight in gold in that situation. I also take voltarin for sprains, antihistamines for wasps. Sunscreen and insect repellant aren't strictly necessary but they are bloody nice to have.