Tip 1) You only need to avoid extreme combos and use Ground Pound (RT+Y), but only if the other thugs are far enough.

Tip 1) If two thugs come close together at the same time, use a quick batarang to stun one and hit the other with the 'X' button.

Tip 2) Make use of the 'Y' button to counter just when you can see the lighting marker for a counter attack on their head. Hit the 'Y' button only one time when countering, or you'll leave yourself vulnerable to incoming attacks.

Tip 3) Where the combo counter became yellow, you can use instant KO. You're untouchable for a few seconds, so you may hit another after the KO attack is finished. For example, you need to choose the farthest enemy despite how far they are away from you (Batman will reach him anyway).

Tip 4) Make use of the RT+Y move only where there are only 2-3 remaining enemies.

Tip 5) If you are facing an enemy and another enemy is attacking you, use 'A' or double 'A' and then proceed to restart from a safer position (ex. X, X, A, A, quick LT, Y, X...).

Tip 6) After a combo or an instant KO, you'll probably have to go against 2-3 enemies at the same time. Use the Cape Stun move(B) that way you can gain precious time you need to continue on with obtaining this achievement.