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Here's a brief summary of my Walkthrough: I gathered everything on my island, went through the portal, immediately to the Seer, right next to it is a dragon's lair, which we also destroy, then we capture Orange and go into the Dungeon, while simultaneously teleporting reinforcements, I only took money from the chests, it's very needed, especially at the beginning. Then down through the Dungeon, we collect the dwarven artifacts, captured the lower Castle, then up, there are two more artifacts and at the same time the second Necropolis Castle. Both were almost fully built, and Orange too (although it didn't help me, I didn't hire any additional heroes and didn't buy undead either). We deliver the artifacts, take the Phoenixes, gather the accumulated troops from the castles, upgrade them if they haven't been upgraded yet, as in my case, and run through the Dungeon to Nicholas at the top, and also destroy the lairs in the Dungeon.
Before the portal to the surface, we teleport the accumulated troops (these were my last reinforcements).
At the top, I was surprised:eek: by Vlad and Lucretia, each had 4807 skeletons, 212 liches, 161 undead, and 431 vampires in their army. Vlad also had 120 dragons and 2778!!!!!:smile15: ghosts. All were upgraded. For comparison, I had 122 unicorns, 378 elves, 167 druids, 99 ents, 351 dancers, and 32 emeralds, also upgraded. So, the most difficult battle for me was with Vlad, I fought several times, at first he cast Berserk on the druids, and the ghosts were not affected by anything at all, and only, I don't remember which battle it was, he suddenly stopped casting Berserk, and I unsuccessfully attacked the ghosts, I defeated all his troops, and then I got to the ghosts, and he fled. I defeated Lucretia in an autobattle without losses, and all that remained was to find Nicholas, while destroying the lairs.
Nicholas ended up hiding in a castle with 1 vampire, I wanted to at least see his level, but it didn't work. He died immediately.
P.S. Faidean had upgraded Chaos magic, education, logistics, attack, and luck. His sworn enemies were necromantic dragons, undead, and liches. All were upgraded.