Hitman reference:In Chapter 2 when you start to fight the police after you pass a bus, Kane will tell you to enter the store on your left. Look at the pictures in that store to see Agent 47 from the Hitman series.
Mini Ninjas reference:
In the "Subway" multiplayer level, when you spawn, turn to your left to find five signs. The first one sign features the cast from Mini Ninjas.
Welcome to Shanghai - Complete `Welcome to Shanghai` on any difficulty.
Street War - Complete `The Details` on any difficulty.
Death Sentence - Complete `Blood, Sweat and Tears` on any difficulty.
Nowhere to Hide - Complete `Laying Low` on any difficulty.
Baby be Safe - Complete `Coming Home` on any difficulty.
Lost Love - Complete `A Thousand Cuts` on any difficulty.
Double Cross - Complete `The Deal` on any difficulty.
Slow Train to Hell - Complete `Out of Shanghai` on any difficulty.
Bring It Down - Complete `Air Strike` on any difficulty.
Kill or Be Killed - Complete `Resurrection` on any difficulty.
Catch! - Push your human shield into an opponent in Story Mode.
Can It! - Kill 10 enemies with exploding canisters.
Mexican Showoff - Kill 5 enemies while downed before successfully recovering.
Sichuan Specialist - Escape the restaurant in `Laying Low` without being downed on any difficulty.
Hand of God - Complete a Story Mode mission without dying once on any difficulty.
Chinese Waltz - Kill 5 enemies without losing your human shield.
Dance Off! - Execute 30 enemies while holding them as human shield.
Trigger Happy - Kill 5 enemies in 15 seconds with any pistol whilst not dropping your health below 90%.
Double Happiness - Kill 6 enemies in a row with a shotgun - all of them as one shot kills.
Steady Hand - Get 5 headshots in a row using the same clip.
A Little Help From a Friend - Complete 1 mission in Co-op.
No Going Back - Complete 5 missions in Co-op.
Giving a Hand - Finish 30 enemies your Co-op partner shot `Down Not Dead`.
Got Your Back - Revive your Co-op partner 10 times.
Welcome - Successfully escape once in Acrcade Mode or in any Multiplayer Ranked Match.
Doing Good - Successfully reach round 5 in Arcade Mode.
Greedy - Earn at least $5,000,000 in every level in Arcade Mode.
Lightning Looter - Reach $8,000,000 in under 6 minutes of actual playtime in Arcade Mode.
Safe Crime - Finish 5 rounds in a row without getting any penalties in Arcade Mode.
Battle Hardened - Complete one session in each Multiplayer Mode (Ranked Match).
Addict - Win 20 sessions of Cops & Robebrs (Ranked Match).
The Cleaner - Escape as a traitor with 50% of any level`s total loot in Arcade Mode or Multiplayer Ranked Match.
Escape from...Anywhere - Successfully escape 25 times in Arcade Mode or in any Multiplayer Ranked Match.
D.I.Y. - Escape with more than $2,500,000 in a round of either Arcade Mode or Multiplayer Ranked Match.
Putting on the Ritz - End a round as Criminal Expert in a Fragile Alliance Ranked Match.
Blackjack and Hookers! - Accumulate $25,000,000 in your career (Arcade Mode and Multiplayer Ranked Match).
Rat Killer - Kill the Undercover Cop as the last surviving criminal and escape (Ranked Match).
Law Enforcer - Win as the Undercover Cop by killing all criminals yourself (Ranked Match).
Harry Houdini - Escape from being held as human shield in any Multiplayer mode (Ranked Match).
Unfinished Business - Kill a yellow carded criminal whilst Down Not Dead (Arcade Mode and Multiplayer Ranked Match).
No I in TEAM - Earn the Criminal Loyalty level in Multiplayer Ranked Match.
There`s an I in TRAITOR - Become Scum in a Multiplayer Mode (Ranked Match).
You Want Blood? - 1000 kills.
End of the Road - Complete Story Mode in Co-op.
Love of Money - Successfully reach round 10 in Arcade Mode.
Most Wanted - Accumulate $50,000,000 in your career (Arcade Mode and Multiplayer Ranked Match).
Alpha Male - Have the most kills in a Cops & Robbers Ranked Match.
Dog Days - Complete Story Mode on any difficulty level.
Dead Men Rising - Complete Story Mode on Extreme.
Mastermind - Become a criminal Mastermind (Highest Rank) in Multiplayer Ranked Match.
Love of the Game - All Multiplayer Modes trophies unlocked.
Blood On Your Hands - Earn all Bronze, Silver, and Gold trophies.
"Doggie Bag" trophies:
Escape From The Pound - Escape on all levels at least once in Multiplayer Ranked Match or Arcade Mode.
Good Doggie - Escape with $100,000 or more in every round of a Multiplayer Ranked Match Session.
K9-Firepower - Get 5 kills using canisters in a round of Multiplayer Ranked Match or Arcade Mode.
Rex - Get 150 criminal kills as a cop in `Cops & Robbers` Ranked Matches.
The Dog Track - Escape in less than 1 1/2 minutes in Arcade Mode or Multiplayer Ranked Match.
Under Dog - In the last round of a `Fragile Alliance` Ranked Match, climb from last to 1st place.
Last in Show - Escape as the last player on your own in a Multiplayer Ranked Match.
Poodle - Accumulate $25,000,000 during your career in Multiplayer Ranked Matches.
Rabid - 1000 kills.