Just finished this map. It is honestly pure nightmare. If you dont want to spoilers, stop reading here. Only way how I figured out to beat this level was to push as fast as possible to blue keeper and capture his rooms and dungeon while avoding his dragons. Just that was difficult. If you dont do this tho, I think its game over later because you wont have diamonds and you absolutly need them. Blue keeper will keep existing after you take his space, because rest of his dungeon with heart is not connected. I did dumb mistake at start by selling his rooms to get gold. I should keep them instead.

You dont have portal whole game basicly so your army need to be created from heroes which will spawn from one of their gate continuously on time whole game. Multiple groups would need to be killed by traps with killing1 or 2 heroes here and there with your army(2 Trolls at level) and then you very slowly make new skeletons, research torture rooma and start also converting. All that on economy of 2 Diamond sides whole game. There will be a LOT of frame skipping too or you will spend like 5 hours on this map.

If you also do mistake and not fortify walls around cave with another hero gate which is close to your dungeon, it will be most likely game over too. If you will be not fast and fortify walls after blue keeper is killed by Yellow keeper, its game over again as Yellow keeper breach your dungeon and you dont have anything to face him at that point.

I was able eventualy kill both keepers with big help of heroes and had army of 50 creatures consisting of Skeletons and mostly lvl 7 heroes. That was no match for insane amount of heroes which spawned and were still present in keepers destroyed dungeons. Like 8 Boulders didnt make a dent into them lol. and then they killed all my creatures. So I tried again different strategy. I connected myself with heroes and when they left their Heart, I dropped creatures there and destroyed it before they could destroy mine. And I won :)

Map has interesting design. But it is just not fun to play it at all because its constant struggle with resources combined with a lot of time wasted and waiting. So rating is 1/5 and yeah I set difficulty at 5/5 lol.