Hi, I have a few questions as to how to get the following achievements:

1. Bubbling Over-- Bubbles is the Lost Skeleton shop keeper, right? How do I get quests from him? o.O Is this an old plot?
2. Hate to Burst Your Bubble - Drink an infected vial. -- What infected vial?
3. Infection Expert - Be an Infection Specialist! Bite other users who have signed up for the Volunteer Infection Program.-- I'm already a full fledged zombie. How do I become an infection specialist? Also, how am I supposed to bite and infect people when everyone is either infected or doesn't want to be bitten?!

Thank you!

1 - Last year you could harvest people's organs; Bubbles would ask for them in those quests. Honestly, don't know if it's retired or if there's any chance of coming back this year or any other in the future. 2 - Vials you would get when completing Bubbles' quests. Here a list of them. They work like a normal zombie infection, but their effects are temporary. 3 - You only need to reach the last stage of the infection. There are some threads in the Survival Celebration forum where users ask to be bitten by a certain infection, that's probably the best way to try to get the achievement.

How do I know which strain I have? Will the vials cause me to get a new strain?

Here's the 2009-2012 list and here is this year's list Yes, they will, but you won't be able to infect people with those strains