There are 12 new Trophies in this DLC.

Bronze

Swift Exit
Awarded when the player has set fastest times on all the A-to-B (exit point) Time Attacks

Ain't No Lap Dog
Awarded when the player has set fastest times on all the lap-based Time Attacks

The Cratest
Awarded when the player has set fastest times on all the Crate Collect Time Attacks

Bullet Dodger
Awarded by completing Time Attack 7 by setting the fastest time and without taking Sentry Gun fire damage

Gun Shy
Awarded by completing Time Attack 3 by setting the fastest time and without taking Sentry Gun fire damage

Twinkle Toes
Awarded by completing Time Attack 13 by setting the fastest time and without taking Mine damage

Defused
Awarded by completing Time Attack 1 by setting the fastest time and without taking Mine damage

Fall Guy
Awarded by completing Time Attack 2 by setting the fastest time and without taking fall damage

Down-to-Earth
Awarded by completing Time Attack 17 by setting the fastest time and without taking Fall damage

Lightning Bolt
Awarded by completing Time Attack 6 in under 70 Seconds

Me Sane Bolt
Awarded by completing Time Attack 9 in under 50 Seconds

Silver

Nut 'n' Bolt
Awarded by completing Time Attack 4 in under 20 seconds

http://www.ps3trophies.com/forums/ps3-trophy-news/64703-worms-2-armageddon-time-attack-dlc-trophy-list.html