So was hitting a point where I was thinking of leaving Vampire Survivors for a little while. I had hit 81 out of 88 achievements. Unlocked a lot of the characters, think there was about 3 hidden ones left for me to try and unlock. So thought I would leave it for an update or 2 before playing again.
So spent another hour playing it seeing as there had been another update, a new character, new items, 2 new evolutions, 8 new achievements and a new bonus mode in levels. So, yeah, probably another 20 hours before I hit the same point again.