Tactics for Conflux.

Grindan and Masslow can take any standard map on the second week without any problems!

It will be very difficult to take the maximum difficulty level - because even with a fortress built up to level 1-7 on the first day + upgrading fairies = 4 Firebirds, 4 Psychics, 10 Fire Elementals, 8 Earth Elementals, about 20 Air Elementals, and nearly 80 upgraded fairies, you can't avoid significant losses - and if the Griffins have high morale and attack the fairies = they will be completely wiped out.
Grindan's combat stats will be weak... approximately 2-1-7-6.
In the spellbook, there's Slow, and even Bless and Mass Stone Skin.
The Firebirds may lose one unit in the first attack, without killing half of the enemy stack... the fairies and psychics will attack without retaliation - but with difficulty, and most likely, together with the air elementals, they will finish off the upgraded stack - and then, the gradual encirclement of the elementalist's troops will not allow avoiding melee combat, in which neither the Firebird nor other troops are suitable for retaliating, and only the fairies and psychics will attack without retaliation, and this is despite the fact that the Griffins attack twice ;) , and still, there will be at least 6-7 rounds... how many times do Griffins usually lose morale in such a case? ... I think at least 3 times - and that's the result...
P.S. Of course, if you have additional troops to supplement the native ones, it will be easier - but if you only use native troops, then either a couple of birds + some of the elementals, or a large part of the monsters of ranks 2-5 will be lost. (this is without the Griffins losing morale more than 1, which is not critical)
In contrast to this, I will say that the Elf, considering the current rules (without upgrading fairies :) ), can take the maximum difficulty level on the 2nd week with native troops without a 7th-level creature, which is more realistic.
And, in fact, Valeska has good chances - but the problem is having Mass Slow at the beginning of the 2nd week, and also the first turn (a single King-Griffin or cavalry that has been in the stables).