When I killed the WoF, I got a blood moon after that. :/
The second time I did that, it happened again. ://///
The other day with my friend we tried the Destroyer, failed, went looking for Daybloom to make potions (we need a farm), night came, got attacked by Skeletron Prime, failed to defeat him, night ended, Solar Eclipse happened come morning, died a few times during that, had it end, back to night time and still preparing to defeat the Destroyer again.
Our town basically had it's inhabitants slaughtered continuously.
The most upsetting is when the Party Girl dies, since she's rare to respawn.
She did not long after, luckily enough, but I still miss the original. RIP Sugar.