Your strategy for playing as Necropolis.

My standard tactic: Week 1: Capture mines and lumber mills, build a town hall, guild level 1, marketplace (if resources allow, build guild level 2), skeletons, zombies. Weak neutral creatures are defeated. Week 2: Build a magistrate, vampire princes – immediately go for sulfur, guild level 2, then liches, but don't engage them yet, defeat all medium-strength neutral creatures, sell unnecessary artifacts at the end, and build a capitol. Week 3: Buy all vampires and liberate the remaining mines, build guild level 3, if there's no plague, upgrade liches and go to capture a weak castle. On the way back, clear out the Dwelling. Ideally, build a stronghold by week 3. Week 4: Clear out castles – send everyone to the Necropolis. By that time, the army will be quite decent. Check the tavern – if the enemy already has level 7 creatures, build messengers. If not, finish building the castle and undead. Then, finish building the guild, and then focus on dragons (although by that time, they will probably not be needed by many).