Ranger – “Emerald” [5th campaign, 2nd mission]

Should we play on Easy or with cheats?
And give advice, give advice...
I couldn't defeat 18 Overlords with 17 Elves in the first week, neither with Subjugation nor with Resurrection.
On the standard maximum difficulty, Ents are built with difficulty in the second week (if you build Elves).
I started the mission ten times - I can't complete it. When the opportunity to build a boat appears, while having at least a small army or defeating the Overlords - it's the fourth week - Deleb arrives, and our armies are annihilated, leaving me with a small remnant.
Then - a slow end...

On Veteran, if you read the topic, I mentioned it. The last time I completed it in 1.5 with a Ballista and Chaos, following the described scheme, and it was even easier (after capturing the central 1-3-2, since there was no logistics, we returned home. And Deleb landed on the upper island, and after a short thought, I sailed there and killed Deleb and another demon, but lost almost everything. As it turned out, it didn't matter; the last Castle with zero heroes and an army was defeated with a weekly increase, with a surplus). But where did you find Subjugation in the first week? How are you doing with cheats? Besides, there are not 17 Elves, Ossir will help us... If you're interested, the Overlords, with a certain arrangement, don't attack with spells, but use a destructive beam. And a Ballista with triple Ice easily takes out 4-6 of them per turn, depending on luck.