Here is a list of Minecrafting "rep" messages from finger info.

... and has some dirt under the chin.
... and has done some digging around.
... and a novice underground explorer.
... and a well-known excavator.
... and an experienced excavator.
... and an expert excavator.
... and Excavator.
... and a Connoisseur of Catacombs.
... and a True Pioneer.
... and a Dweller in the Deep.
... and a Conqueror of the Depths.
... and the Seeker of the Underworlds.