Marmot is certainly not a problem.
In my opinion, the main issue is the time limit and speed required to complete the map. There are guardians scattered throughout the map, each with its own time limit. If the algorithm for completing the map is disrupted, a message will appear: "Time is up, you will never be able to pass this area."

Another difficulty, and sometimes it's just frustrating, is that every two weeks, all resources and gold are automatically reduced to zero. This means that every other week, you need to sell resources on the market to get gold and buy troops in the cities so that the money doesn't disappear.

As I mentioned earlier in this thread, when I couldn't complete one section of the map, this masterpiece has very few artifacts, unlike other maps where your backpack is overflowing with different items.

Fans of Heroes 3 should appreciate this map. Good luck and patience to everyone.