The DLC Set 6 Add-on for R-Type Final 2 has 6 achievements.
Re-experience FINAL: records of the mission at the laboratory facility, code-named "Last Dance."
Re-experience Tactics II: records of the battle between the allies and insurgents at the Pluto base.
Re-experience I: records of the Bio Void of the First Bydo Mission and the creature of furious rage.
Finished Re-experience FINAL by using a prototype with Bydo elements at BYDO difficulty or higher.
Destroyed all fleeing carriers at BYDO difficulty or higher and finished Re-experience Tactics II.
Witnessed the two giant shadows at R-TYPER difficulty or higher, bringing an end to Re-experience I.