<br><table width='100%' cellpadding=3 cellspacing=3 border=0><tr valign='top'><th>Achievement</th><th>How to unlock
</th></tr><tr valign='top'><td>Bazookin'</td><td>Kill 6 enemies with the bazooka.
</td></tr><tr valign='top'><td>Big Blimpin'</td><td>Kill all penguins stationed on the big zeppelin in Chapter 8 (Single Player).
</td></tr><tr valign='top'><td>Bird Brained</td><td>Brainbug at least one penguin from each of the 7 penguin ranks, including Putzki.
</td></tr><tr valign='top'><td>Brainbug Fever</td><td>Brainbug 30 enemies.
</td></tr><tr valign='top'><td>Dirigibully</td><td>Kill all penguins stationed on the small zeppelin in Chapter 8 (Single Player).
</td></tr><tr valign='top'><td>Dirty Half-Dozen</td><td>Complete the Cooperative game mode.
</td></tr><tr valign='top'><td>Disgruntled Worker</td><td>Find 3 Signs.
</td></tr><tr valign='top'><td>Door Sentry</td><td>Kill 30 Penguins as they step out of a door.
</td></tr><tr valign='top'><td>Excessive Stacking</td><td>Stack all 3 crates near the end of Chapter 11 (Single Player).
</td></tr><tr valign='top'><td>Fear the Spur</td><td>Kill Brno with the knife.
</td></tr><tr valign='top'><td>Flight Instructor</td><td>Juggle an enemy for 10 seconds.
</td></tr><tr valign='top'><td>For What Reason?</td><td>Launch the silo missile.
</td></tr><tr valign='top'><td>Friendly Transit</td><td>Carry the other cooperative player for 500 meters in the same chapter without dying.
</td></tr><tr valign='top'><td>Hardboiled Orca</td><td>Kill 300 penguins or clones.
</td></tr><tr valign='top'><td>Hardboiled Seal</td><td>Kill 100 penguins or clones.
</td></tr><tr valign='top'><td>High Treason</td><td>Brainbug the penguin above the star in Chapter 6 (Single Player).
</td></tr><tr valign='top'><td>Hindenburger</td><td>Kill all penguins stationed on the zeppelin in Chapter 3 (Single Player).
</td></tr><tr valign='top'><td>Hydrogen Run</td><td>Escape the large zeppelin with 40 seconds or more on the timer.
</td></tr><tr valign='top'><td>Laser Assist</td><td>Kill an enemy by knocking him into a laser door.
</td></tr><tr valign='top'><td>Mission Complete</td><td>Overthrow Putzki and liberate Albatropolis.
</td></tr><tr valign='top'><td>One Shot One Kill</td><td>Kill 10 enemies, each with one gunshot.
</td></tr><tr valign='top'><td>Own Medicine</td><td>Kill a helicopter penguin with his own missile.
</td></tr><tr valign='top'><td>Own Pharmacy</td><td>Kill 6 helicopter penguins with their own missiles.
</td></tr><tr valign='top'><td>Personal Space</td><td>Punch or kick 100 times.
</td></tr><tr valign='top'><td>Rebellious Laborer</td><td>Find 20 Signs.
</td></tr><tr valign='top'><td>Revolutionary Fighter</td><td>Find all 45 Signs.
</td></tr><tr valign='top'><td>Too Many Too Soon</td><td>Kill 3 enemies with one grenade.
</td></tr><tr valign='top'><td>Turncoat</td><td>Kill 20 enemies while brainbugging.
</td></tr><tr valign='top'><td>Two Birds One Stone</td><td>Kill 2 enemies with one grenade.
</td></tr></table>