[HMM V TOURNAMENT] "Ghostbusters"

How was it possible to get 1400 Expertise Points? And so much experience, and so quickly?

I already have a complete description of my playthrough ready, but the organizer is still silent. Once at least preliminary results appear, then we can demand descriptions from the winners. But for now, nothing is known. Maybe I'm wasting my time here, and someone will show a result better than mine, or maybe there will be more than one such person...
Regarding experience, it was possible to gain even more at that point, but the main thing was collecting ghosts and the amount of Expertise Points, and I based my strategy on that.
I repeat that there was a combined artifact for experience (+45% to experience), plus an expert trainer (+15% to experience), i.e., a total of +60% to experience - and I got all this on the 6th day.
And regarding Expertise Points - here is a quote: at the end of the 3rd week, we have: the main hero Vlad - level 26 (with a mastery amulet) and 6 necromancers of level 18. And on the next day, we will have 1431 Expertise Points.

Added 9 minutes later
Decoding: - 26 level (perfected necromancer) = 283 Expertise Points
- 18 level (skilled necromancer) = 108 Expertise Points
total: 200 + 150 (Ash's amulet) + 150 (Bone Pillar) + 283 + 108*6 (648) = 1431