Paragon 2.0 map – walkthrough.

Since the question has been asked a couple of times here: "Can this map be completed in HotA?", I will copy the information from HeroesPortal:

An experiment to complete the Paragon map in the Horn of the Abyss add-on has begun! Sir alexmaler decided to conduct an experiment and complete this map in the "Horn of the Abyss" add-on. Let's see if he can do it – watch his video! We suggest you check it out:
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6

In fact, as far as I remember, there is at least one place that is impossible to complete in HotA (the magic source in cell 126.56, which cannot be reached by water), so the question can already be considered answered. But let's not forget that there are still those who like to "bite the cactus"... :)
Update: I have now found out that the video author is already aware of the problem (he was informed by other players) and has started playing again in SoD.
Here is what user ccbb wrote in the comments under the video:

Paragon cannot be completed in HotA. Unless you have a special version of Paragon for HotA. But this version is not from the author. In version 1.5 of HotA, some features also do not work. You need to play in the classic full collection version - SoD.