In the end we each made off with a treasure token.
Quite late in the game, when no-one had died yet I realised I'd been getting the wounding rules wrong - "I knew it daddy!" was eldest boy's response. But a game where no-one died and we all got treasure was probably the right sort of introduction.
Apart from that error the rules were simple and it played out well. I think the boys will be up for another game soon.
Apologies for the poor picture quality. One urgent purchase is a piece of grey cloth to form a gaming base.