"Escape to Salvation" - "Magnificent Retreat" [Campaign 4, Mission 4]

Thank you, I completed the game on Warrior difficulty, although it was still challenging. I would like to note the following: 1) It is much easier to complete the campaign if you take Zehir with the "Sorceress" specialization and the "All-Seeing" skill. Additionally, you can take the main Dark Magic and Mind Control skills (even though Magic is a main skill, mass spells are cast as if by an expert). 2) I highly recommend that everyone use the "Terrifying Roar" ability in the battle with Groll; it helps a lot. 3) Before the battle with Biara, it is best to equip all available artifacts on the combat units, as the troops are from different armies, which lowers their morale. Also, Biara has a ring that lowers morale by 2. 4) During the battle with Biara, try to attack only the non-summoned units, as killing summoned units will not be effective (you can also experiment with the ring of banishment).