There isn’t really any info to garner from the rating for the game, other than it’s been awarded a 12 rating. Here’s some basic info on the game taken from the PlayStation Store to bring you up to speed on the sequel:
In ARMORED CORE VI FIRES OF RUBICON, players will assemble and pilot their own mech with 3D maneuverability to move freely through three dimensional fast-paced missions. Take on difficult challenges and overwhelm your enemies with dynamic movements that make full use of ranged and melee combat. Players can enjoy a variety of actions that can only be truly realized with mechs.
Armored Core VI: Fires of Rubicon will have a focus on single-player and customisation, according to producer Yasutaka Ogura, and while it’s made by FromSoftware, don’t expect the gameplay to see any Soulslike gameplay.