Posts from Playing on L-shaped maps.
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Орден Феникса – харизматический :) лидер
2. Tower.
The main hero is Kirr. :eek:
Besides, if the rules allow, you can also use Tazar, Crag Hack, Sir Mullich, Galtaran, Dess, Gunnar, and others...

Орден Феникса – харизматический :) лидер
Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,
Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
Rejoiceth not in iniquity, but rejoiceth in the truth;
Beareth all things, believeth all things, hopeth all things, endureth all things. Charity never faileth...
Heroes: Galtran, Izra, Vidomina.
Build order: first week - vampires in the Stronghold (better in the Castle)
The first two buildings are cheap (meaning we can buy many heroes) and very useful for the starting army and the speed of recruiting skeletons. If zombies are available at the start, Liches are also a good option. There are also cases where the Enhancer is not effective in the first week, but, in my opinion, this is less common than the opposite, and there is not always enough money for knights, because on day 8 you need to upgrade vampires, buy forces, and almost always explore revealed Hive and resource locations, which will provide high-level units for recruiting skeletons with several Necromancer heroes.

Орден Феникса – харизматический :) лидер
Dirty_Player seems to have meant that the chance of the ranger Kirr appearing in the Tower's tavern is too low,
and therefore you are unlikely to be able to make him your main hero.
I think Dirty Player was hinting at the fact that it's not that easy to find a strong hero because there are so many of them. The lack of a decent starting hero is a major drawback of the Tower.
The author's question is more important than discussing which heroes are best to play...?
But still, this question isn't entirely objective... To answer it, we need more details, as each castle and faction has its own tactics for playing on an L map. Since the speed of victory on the map plays a significant role, let's talk about Online play... And here, there's nothing particularly unusual... - the only thing is that there's a real opportunity to let Necromancers "have fun" collecting skeletons...
The tactic is always the same: act according to the situation.
I choose mages as heroes.
Tower: Solmyr, Halon
Necropolis: Sandro, Nimbus
Dungeon: Jaeghar, Geon
Damacon, it's better to choose Damacon! :D
And you shouldn't make Gunnar your main hero either! He's a loser too!!!
But Damacon is a real pro :D
За то что нейтралы не бегают за единичкой, для меня это уже стоит того
(Василь Симоненко. Люди – прекрасні)
Let's imagine for a moment a fix that removes these units – where are your supposed skills then? You need to think in new ways, but that's not something online players are used to.
Added 7 minutes later
In short, to all online and offline players:
I offer a bonus of 50 bucks to whoever is the first to complete mission 3 and submit the save files.
I'm not rich, but I stand by my word.