Rocketbirds: Hardboiled Chicken

Mission Complete

Overthrow Putzki and liberate Albatropolis

Dirty Half-Dozen

Complete the Cooperative game mode

Hardboiled Seal

Kill 100 penguins or clones

Hardboiled Orca

Kill 300 penguins or clones

Disgruntled Worker

Find 3 Signs

Rebellious Laborer

Find 20 Signs

Revolutionary Fighter

Find all 45 Signs

Flight Instructor

Juggle an enemy for 10 seconds

Own Medicine

Kill a helicopter penguin with his own missile

Own Pharmacy

Kill 6 helicopter penguins with their own missiles

Hydrogen Run

Escape the large zeppelin with 40 seconds or more on the timer

Door Sentry

Kill 30 Penguins as they step out of a door

Brainbug Fever

Brainbug 30 enemies

High Treason

Brainbug the penguin above the star in Chapter 6 (Single Player)

Turncoat

Kill 20 enemies while brainbugging

Bird Brained

Brainbug at least one penguin from each of the 7 penguin ranks, including Putzki

Fear the Spur

Kill Brno with the knife

Two Birds One Stone

Kill 2 enemies with one grenade