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Started off a bit poor, but on the first day, I captured a PDL and got 35 ghosts, and also found an amulet of speed, so I persevered.
The areas I passed through were mostly swamps and deserts, so development wasn't very smooth, but luckily there were many level 1 units along the way, so the speed of gathering skeletons wasn't slow.
On day 122, I encountered an enemy, I captured a Dragon village, built a mana vortex, which doubled my mana, so I brought 240+ skeletons and headed straight for the enemy's territory, and the enemy didn't resist.
On day 124, the enemy gathered all their troops to intercept me. They had 5 Imps, 7 Whippers, 50+ Demons, and other miscellaneous units. I had 248 skeletons and 30 ghosts. Because their attack power wasn't strong enough to destroy my skeleton army in one go, I summoned skeletons several times, and their forces gradually weakened and were defeated. Because I was already at their doorstep, the enemy had no way to turn the situation around, so they surrendered.
In retrospect, the enemy had a good initial economy and quickly got boots. They had a Demons' lair at the entrance. Finally, after rescuing Xsi from the dungeon, they had logistics and a 10% resurrection bonus. If they hadn't tried to intercept me, but instead abandoned the city and developed, the outcome might have been different!
tfp