Totaling 200 ordinary yugi vampires also sometimes requires more then 1 playtrough OR one playthrough and grinding green portals without killing them all.
Also hard to get is one defending from bites. You have to let them attack, and as usual defend (E on keyboard). Tactics I used is letting one last live and then letting it attack, defend. As many times, until it dies (and you can get few times from one).
Good luck!

Tips for cursed gold: - You can find hell money map on Steam. Most ♥♥♥♥♥♥ one is killing enough demons and killing them with sword since there are few per gameplay. My tactics was to finish the game and save. You will have few remaining spots (mostly pink-magenta ones) where demons are - like top right corner. Go there with sword (you can get it by closing portal with ordinary vampire creatures - green portals on map), attack just demon and kill it.
DO NOT kill remaining vampires, save and do it again (for 20 times sadly, if you havent killed any demon with sword previously). This will give you hardest two medals - for killing demons and killing with sword.

Mantab