Batman Arkham Knight - Iceberg Lounge AR Challenge "Requiem for a Killer" trophy for noobs

If you are a noob like me, then this may help you.
Inspired by item112z's video, • Batman Arkham Knight: ... , I modified his method and made this.
1) Use batclaw slam to build your combo meter. Once it's full, perform a takedown. Rinse and repeat. Spare the medics, they are harmless, I took them down by mistake.
2) Once you are close to 30,000 points, shield and stun baton guys will occasionally appear. Disarm them as soon as possible. I try to jump over them before doing it. Cos of the stupid targeting system. It sometimes just disarm knife or baseball bats instead. (Damn Rocksteady)
3) At 250,000, thugs will occasionally go for guns. Disarm them always. Also assassin will start spawning, you should focus on getting rid of them if there are no guns, shield and stun baton.
4) Close to a million points, big guy will appear. They should be your primary target. Should not have too many showing up if your combo did not break right from the start.
5) Enemies will stop spawning after 1.05 million, get rid of them and good luck. After Killer Croc is down, trophy / achievement will pop.