Rexsar
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Eleondor, send the replays, and we'll see what your mistakes are.
Build your town like this:
1. Guild of Mages, then infantry, and only then archers.
Recruit troops in this order: peasants, then infantry, and only then archers right before facing the Necropolis, because they're not needed otherwise.
Don't build a Fortress or a Citadel; instead, upgrade the infantry to Zealots before facing the Necropolis.
The Recruit map can be cleared using auto-battles (almost everywhere).