Some help for people who can't beat this quest.

If you tried several times but can't make it to day ~15 here are some tips:

1) Tanking wizard towers are no joke. (!)
2) Upgrade markets and guardhouses. ASAP. Period. Three marketplaces is good start.
3) Dragoncallers are your best friends in the beginning.
4) One Lighting Storm upon sewer breakage is enough.
5) You WILL need extra builders.
6) You must play offensive. If you don't destroy most lairs by day 45 monsters will overrun you.(!)
7) Hotkey U is for Upgrade, R is for Recruit.
8) Possible to complete quest with dwarves and elves. With elves much easier due to x2 market income.
9) lvl2 Castles(from mod) also of great help for holding off mobs.
10) Make sure to use of extortion guild skill. Tax collectors will never collect gold in time. (!)
11) Watch out for Black Phantom lairs. Destroy them ASAP.
12) Watch out for Daemonwoods. They don't show on map. Their assault can easily destroy several buildings.
13) Watch out for Oculus - hero killers... Basically destroy all lairs ASAP.