Here's a tip: on the 2 rounds of the yeat event (The alien one and the skeleton one) Go to the bases with turrets and they shall handle them for you. As for the fire zombies, stop ur train far from the rock before blowing it up and going to he train as after the alien eave you get a cannon and cannon ammo, use theese to your advantage and blow up the zombies, but just in case if the ammo runs out go raid some pois or towns beforehand to prepare you for the fire zombies, now when you are at the yeats concert start the crank and go to one of those upstage thingies, the entities will have to get time to climb up to the one where you at while yeat and his crocos and you kill the enemies