Tactics for fighting neutral creatures when playing as the Academy.

Without any losses, in fact, all of this can be achieved by spending mana and having enough archers and initiative. To fight Gremlins, it's best to place magical crystals next to them. This blocks their attacks and potentially increases damage in the future. As for Druids... the most effective method is to either control them or use Berserk. And it's better if these spells work at higher levels. At the very beginning, you can simply use a scroll if you're lucky. And in general, if you're fighting Druids, it's much more effective to recruit better archers and complete at least two magic circles. It's important to have Magic Arrow at the beginning.
Since we're talking about the Academy here, things are much simpler. The spells of the "academics" are more effective against other creatures, and their foundation is initially present in the spellbooks of most heroes. But, essentially, losses are avoided only by increasing the initiative of the troops.