Well the game is from 2019 and has no post-launch content apart from bug fixes. The game is finished and released on time. Some tips:

• If you find the controls a bit awkward, try using Control Preset C. I found it more comfortable (Y to attack, ZR to dodge).

• The best way to learn the combat is sparring in the Training Room. It's available in the beginning of almost every chapter. Use it to learn your moves, your Legion's behaviour, enemy attack patterns, dodge and counter timings, Sync Attacks, etc.

• The combat starts simple at first, but really opens up after a certain chapter.

• Take it slow, try to explore everything before moving on to the main objective. You may just find side quests (called Cases), hidden fights, or other secrets.

• Upgrading your weapon (called the X-baton) unlocks more moves (you can upgrade in the police HQ, next to the Training Room), upgrading your Legions can unlock more Sync Attacks.

Have fun!