There are 9 new trophies in this DLC.

Bronze

K9-Firepower
[Doggie Bag] Get 5 kills using canisters in a round of Multiplayer Ranked Match or Arcade Mode.

Escape From The Pound
[Doggie Bag] Escape on all levels at least once in Multiplayer Ranked Match or Arcade Mode.

Under Dog
[Doggie Bag] In the last round of a 'Fragile Alliance' Ranked Match, climb from last to 1st place.

Good Doggie
[Doggie Bag] Escape with $100,000 or more in every round of a Multiplayer Ranked Match Session.

The Dog Track
[Doggie Bag] Escape in less than 1 1/2 minutes in Arcade Mode or Multiplayer Ranked Match.

Rex
[Doggie Bag] Get 150 criminal kills as a cop in 'Cops & Robbers' Ranked Matches.

Silver

Last in Show
[Doggie Bag] Escape as the last player on your own in a Multiplayer Ranked Match.

Rabid
[Doggie Bag] 1000 kills.

Poodle
[Doggie Bag] Accumulate $25,000,000 during your career in Multiplayer Ranked Matches.

http://www.ps3trophies.org/news/news-1600-DLC-Added--Kane-&-Lynch-2--Dog-Days.html