I've just finished Duncan challenge, yesterday evening, 2 human players and heroes.
1. Ele SF - human (pain inverter on it)
2. Nec SS - human (pain inverter on it)
3. Nec SV - hero (signet of sorrow, blood)
4. Ele SF - Hero (holding also Swap)
5. Rit lord - Hero (Union, shelter, etc)
6. Nec MM - Hero (frozen soil)
7. Monk - Hero (healing + prot spirit)
8. Monk - Hero (healing + prot spirit)
We reach Duncan in 15 min, no deaths for team.
Duncan died in aprox 15 min.
Important steps to kill Duncan:
1. Use Swap to move recuperation spirits to avoid Duncan healing.
2. SS & SV necro spamming from corner near stairs.
3. Protection spirits up all the time
4. Protective spirit up all the time.
It was quite smooth I may say
