This guide contains video for all of the non-story related achievements / trophies for Batman: Arkham Asylum.

Leave No Man Behind – Rescue the guards and henchman from the Joker toxin in Decontamination – 10 / Bronze
Rope-A-Dope-A-Dope – String up one henchman and drop him to surprise a second (any play mode) – 10 / Bronze

Catch! – Catch a Batarang (any play mode) – 5 / Bronze
Night Glider – Glide continuously for over 100m – 5 / Bronze

Freeflow Combo 5 – Complete a combo of 5 moves (any play mode) – 5 / Bronze
Freeflow Combo 10 – Complete a combo of 10 moves (any play mode) – 5 / Bronze
Freeflow Combo 20 – Complete a combo of 20 moves (any play mode) – 10 10 / Silver
Freeflow Combo 40 – Complete a combo of 40 moves (any play mode) – 10 10 / Silver

Freakshow Rodeo – Ride Titan henchman and knock down 10 thugs (any play mode) – 10 / Bronze

Freeflow Perfection – Perform a perfect combo including all of Batman’s combat moves (any play mode) – 10 10 / Silver
Party Pooper – KO all the henchmen celebrating your arrival at the party – 10 / Bronze

Flawless Freeflow Fighter – Complete one combat challenge without taking damage – 10 / Bronze

Mano-A-Mano – Defeat Titan henchman without using Batarangs (any play mode) – 10 / Silver