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(since I'm already on the third mission, I'm writing from memory...)
Betrayal
First Mission
Objectives:
1) Find the road to Shio (and escape from Godric, naturally).
Walkthrough:
I don't remember the starting demon army anymore. Agrail runs and visits the mage's tent (sees open pieces of the map), visits the hut, and learns Logistics. At the fork, turn left (the road to the right goes a short way and ends with grass beyond). So we ride left. On the way, I even managed to kill someone by the flag (Blade Dancers, I think)... And right nearby, visit the tree (for Far Sight). Keep riding along the road, don't linger anywhere. You'll encounter imps and dogs on the way (I encountered them); recruit them. Ride along the road, then not far from the enemy garrison, there is a magical thingy (a tent, basically) that teaches some circle spell. In my case, it was guarded by Earth Elementals. So, go past this tent—to the side. I fought my way through skeleton archers and recruited the dogs located behind the skeletons. I killed some other neutrals guarding the upgrade (a crystal thing). Then I ran to buy war machines; I wanted to turn back a bit and hire archers from the tower (Godric had fallen quite far behind), but then another hero came my way (steering out from exactly where I needed to go: 1 angel, 4 knights, about 30 griffins, around 70-100 peasants, archers, mages... I don't remember exactly, but the army was quite decent). I didn't want to fight. I reloaded to before the fight with the skeletons. Fought again, recruited the dogs again, killed the guys at the upgrade, and WITHOUT TURNING BACK FOR MACHINES AND ARCHERS, I immediately ran along the road toward the tent to make it in time. It didn't matter. The enemy was closer. As luck would have it, he stood right on the road, blocking the way. I attacked. The army consisted of 112 imps, 86 of one type of dog and 52 of another (I don't remember if they were upgraded or not), about 30 demons... who else was there? — I think 2 lords, 4 horses, and 15 demons (or one of the latter two... Regardless of the tactics—no one charges the enemy (let them come to us), we use Astral Gates (let the summoned fight), use the Mark of the Damned (I had it) so that Agrail could strike back at the attacker... after the battle, the remaining army was: 25 imps, 48 upgraded dogs, and 21 ordinary dogs. I also recruited 7 archers and 10 swordsmen—as much as my money allowed. I killed swordsmen on the way (they blocked the path), killed minotaurs, dove into the portal, opened the gates, and into the dungeon. Godric doesn't cause any problems—I have Logistics, and he fell behind. I managed to visit all the Inferno buildings—hired dogs, demons, imps... In short, at the moment of the battle with the demon enemy, I had: 2 imps, 81 upgraded dogs, 52 ordinary dogs, 7 swordsmen, 30 demons. The opponent had: 75 imps, 1 devil, 2 lords, 15 succubi, 55 dogs. Tactics: imps (even if there are only two), dogs, and demons create gates on their first turn (if they can). Swordsmen wait; they don't rush into battle. Agrail keeps track of which enemy hero will move soon and who can reach his army. He watches and casts Mark of the Damned on them. Succubi attacking with fire? They get a counterattack from Agrail. When the enemy starts advancing toward your army, the summoned have already appeared (I had fast gate opening). Throw them into battle, throw the rest into battle (but not all). For example, throw in the dogs, but keep demons, imps, and swordsmen aside. No need for the enemy to hit everyone at once... In principle, I had no problems in the fight (it was even worse against a human), no need to replay))
PS: A few tips:
You MUST take Logistics for Agrail. You will need it in all missions. In Logistics, take PATHFINDING, SCOUTING, and the third one is up to you (I had fast gate opening). Why is this necessary? Pathfinding will help you move quickly across rough terrain (to escape from Guilraen in the third mission), and scouting gives you +4 to the vision radius (in the fifth mission, you can then easily sail to the cartographer at the start... If you manage to give Agrail Luck as well, then it's just great. But Logistics (Scouting and Pathfinding) are MANDATORY. Imho.