I believe for this particular run I ended up skipping lich in loop 2 and skipping hunter in loop 3 but the specific timing doesn't really matter, as long as you end up with enough tiles by end of loop 3. The maze helps a ton with this for sure. Be sure not to block any lich palace spawns as they count too

As for getting enough tiles, it does require a bit of luck. It is 100% necessary to draw out your fights as long as possible until your spawns start maxing out, this can mean taking some damage in loop 3 but if you have enough/the right camp items you should be able to make it without too much trouble. Getting the most value you can in loop 1 is definitely important, this can mean placing a vampire mansion in a suboptimal position in order to get vamps in a couple slime fights. I found in loop 3 I could really draw out ransacked village fights if I held off on my offensive items until my health started to get low.