I completed the first map. After having a garrison of 2x500 faeries and 10 phoenixes, the Guardian seemed like an easy walk. Luckily, comrade Spy was stationed in the dwelling. Oh, and one more thing - kill them, but the experience limit is too small. I was already taking chests for gold (the fact that I was taking chests for gold is very tough). The tactic for the first mission is to initially rely on 30 snipers, and then on ominous knights + liches.
Sincerely.