Burning the midnight oil
Awarded for activity (vote, question, answer, comment) at least once per hour, for 24 hours in a row.
Selfless (or Communist, even if it was mentioned elsewhere)
First community wiki created (not turning a question into a community wiki, but really starting it as a wiki in the first place.)
(No longer relevant)
Has at least 50(?) Ignored Tags for every Interesting Tags (or has had that for x days).
Has had a high number(?) of Interesting Tags and no Ignored Tags for x days.
I really like how the last two play against each other :)
(I don't even remember what I meant)
Similar to a tumbleweed, with a twist: Asked a question with no votes, no answers, no comments, but high views (say 100), over any amount of time.