As Tibia Wiki says, finishing the Bigfoot's Burden Quest you will obtain 24 achivements (46 points in total).
24 achievements in total.(46points)
Rank I (30 rep points)
Gnome Little Helper
Rank II (120)
Gnome Friend
Rank III (480)
Gnomelike
Rank IV (1440)
Honorary Gnome
Crystal Keeper
Raiders of the Lost Spark
Call Me Sparky
Exterminators
One Foot Vs. Many
Mushroom Digger
The Picky Pig
The Tinker's Bell
Substitute Tinker
Matchmaker
Crystals in Love
Spore Gathering
Spore Hunter
Grindstone Hunt
Grinding Again
You get some achievments according to you rank:
Also you get some achievments completing the tasks for the first time:
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