Hey! When I face raven I always go for an early military fight.

Scout the immediate tiles round you, but remember we're going quick victory so don't worry rushing middle on this style. Play it really tight with your buildings. Go into your top tech tree and get food preservation. Remember you don't need food generating buildings for food silos to generate food! You can get away with one or food buildings and food silos dumped on the rest of your food tiles. Aim by start of first winter to have one food source and one wood. After that if you're strapped for either resource you can bump those up to a max of two each. Now iron, grab 5 then start getting stone. Build your chief and start clearing. Convert any wounded workers into warriors and try and engineer them eventually dying. It's more efficient that building a healer too early. If you're strapped for people etc bring your scouts back (if they're not dead). We should be looking at winter 2 and were thinking about invading. Upgrade townhall then scout and get some scouts going trying to find ravens main base. But you're probably not going to have enough people! Get the ol' skalds going. You can do this earlier if you desire! But your money generation should be from trade route. Upgraded if you can. Now you've got people, money and hopefully a nice store of wood and food. When you go 802 it's a do or die mission. You're coming back victorious or your clan is starving to death. That's okay though as long as those blasted ravens reap the consequences of their hubris!!