UPDATE: There's an official site now, which includes tons of stuff including a huge manual with background on the setting and characters! Check www.familykrieg.com/tothebitterend/ Note that the site's bandwidth is limited but I'm not sure HOW limited, so please don't download from it unless necessary or I will have to take the downloads down.
Hello again Ramza. Thanks for the suggestion, but as you can see in the edit below, I've already fixed it. I just added a few conditions to the victory trigger and changed the death time for the necromancer. I tested it two or three times and it worked how it should every time.

Thanks again!
Edit: New update. Includes numerous bug fixes, enhancements to the Celerity and Blooddrinker Possession abilities, and balance fixes that improve the Celerity ability and the Abyssal Mass. The Abyssal Mass has had its armor improved but its Permanent Invisibility removed - the invisibility was actually more a hindrance than a help, since it prevented the Abyssal Mass from using its damage aura as effectively as it was supposed to.
Edit: The map has been updated! The newest version features various bugfixes and skill balance changes, as well as a really stylish new loading screen! As well as improvements to the Lightning Storm skill, the Blood Plague skill has also undergone major improvements, the Abyssal Mass has gained a useful new passive ability (but costs slightly more to summon) and the 'Fei dying but game not ending bug' at the end of the chapter has hopefully been stamped out.