Full list of all 24 Akumon Summoner achievements.
The base game contains 15 achievements, and there is 1 DLC pack containing 9 achievements.
Leif taught you a secret about mutations.
You have found Foxon.
You have defeated Vance.
You have entered the Tree of Life.
You have encountered a Tagemon.
You have encountered a Dreadshard.
You have encountered an S-Rank Akumon.
You have found Plumon.
You have won the underground tournament.