Completed all user profile fields

Got 3 upvotes in a question tagged with "bug"

First flagged post

Voted 100 times

First rollback

First down vote

Deleted own post with score of 3 or higher

First edit

First answer was accepted with at least 10 up votes

Asked a question with 1000 views

Question favorited by 25 users

Answer voted up 10 times

Question voted up 10 times

Answer voted up 25 times

Question voted up 25 times

Accepted answer and voted up 40 times

Answered a question more than 60 days later with at least 5 votes

Answer voted up 5 times

Question voted up 5 times

Asked a question with 250 views

First retag

Deleted own post with score of -3 or lower

Asked a question with 100 views

Left 10 comments

First accepted answer on your own question

Answered your own question with at least 3 up votes

Question favorited by 50 users

Edited 50 entries

Asked first question with at least one up vote

First up vote

Created a tag used by 50 questions

Answered first question with at least one up vote

User who has validated email associated to the account