Here is the full list of all 8 Octane Remix achievements.
Launch Octane Remix for the first time.
Complete a full campaign run as Ludwig.
Complete a full campaign run as Akash.
Complete a full campaign run as Michishige.
Reach 50 000 score in one campaign run.
Reach 100 000 score in one campaign run.
Reach 500 000 score in one campaign run.
Reach 1 000 000 score in one campaign run.