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IMHO, even the first mission is more challenging than this one. The main thing is not to get confused with the teleporters. I got confused when I loaded the game the next day. But, as far as I can tell, the enemies' army doesn't grow over time. So you can wander around as much as you like.
A tip for those who have version 1.4 or higher. When your hero reaches level 29, take all the chests only with gold. True, by that time I only had 1 chest left, because I had already taken some chests with gold before. Then you need to return to the level-up point and increase it to level 30. Along the way, you can visit the dwellings and the fortress. You still won't be able to buy and upgrade more than a small part of the units that have accumulated in the dwellings.
A tip for those who have version 1.4 or higher. When your hero reaches level 29, take all the chests only with gold. True, by that time I only had 1 chest left, because I had already taken some chests with gold before. Then you need to return to the level-up point and increase it to level 30. Along the way, you can visit the dwellings and the fortress. You still won't be able to buy and upgrade more than a small part of the units that have accumulated in the dwellings.
