Here is the full list of all 11 Limberjack achievements.
Recorded a time below 60 seconds
Threw the chainsaw into the sea
Threw the chainsaw 50m
Threw the chainsaw 100m
Cut two limbs simultaneously
Cut three limbs simultaneously
Cut four limbs simultaneously
Recorded a time that tops the global leaderboard
Recorded a time below 30 seconds
Recorded a time below 20 seconds
Recorded a time below 15 seconds