Here is the full list of all 30 Rocketbirds: Hardboiled Chicken trophies - there are 17 bronze, 6 silver, 6 gold and 1 platinum.
Brainbug at least one penguin from each of the 7 penguin ranks, including Putzki in a single playthrough
Find all 45 Signs
Find 20 Signs
Escape the large zeppelin with 40 seconds or more on the timer
Kill all penguins stationed on the big zeppelin in Chapter 8 (Single Player)
Kill all penguins stationed on the zeppelin in Chapter 3 (Single Player)
Kill 10 enemies, each with one gunshot (Single Player)
Launch the silo missile
Brainbug the penguin above the star in Chapter 6 (Single Player)
Juggle an enemy for 10 seconds (Single Player)
Overthrow Putzki and liberate Albatropolis
Kill Mega-Brno in Hardboiled mode
Kill 6 helicopter penguins with their own missiles
Kill 300 penguins or clones (Single Player)
Kill 3 enemies with one grenade
Kill yourself as an Elite Penguin on Palace TV in Chapter 13
Stack all 3 crates near the end of Chapter 11 (Single Player)
Find all four episodes of Putzki on TV in a single playthrough
Brainbug 30 enemies
Kill 2 enemies with one grenade
Kill 20 enemies while brainbugging
Find 3 Signs
Kill all penguins stationed on the small zeppelin in Chapter 8 (Single Player)
Kill 6 enemies with the bazooka
Kill 30 Penguins as they step out of a door (Single Player)
Kill an enemy by knocking him into a laser door (Single Player)
Kill 100 penguins or clones (Single Player)
Kill a helicopter penguin with his own missile
Collect all trophies
Invite a friend and Complete the Cooperative game mode