For Vesuvius, use the True Start Location map Europe, Renaissance start, disaster intensity 4. Should get it in a few minutes. For peacekeeper I just did a hotseat 3 player game, captured a city with one player then triggered an emergency with Canada and the other player. No AI needed. Now have the full 50 (took 40 hours, no save files). No completely broken achievements this time (well except Canada). Only achievement I wasn't able to get without assistance was Danse Macabre - I don't have many hours to learn one scenario. Did some .txt file changes to make the scenario easier.