<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>Aerial Ace</td><td>Clear the Hydro Islands.
</td></tr><tr valign='top'><td>Alpha as Fudge</td><td>Kill the Patriarch.
</td></tr><tr valign='top'><td>Boom Baby</td><td>Kill 2 enemies with a single Bomb.
</td></tr><tr valign='top'><td>Bring It On</td><td>Beat a level on Hard.
</td></tr><tr valign='top'><td>Core Guardian</td><td>Get a perfect round.
</td></tr><tr valign='top'><td>Diciple</td><td>Clear the Training Area.
</td></tr><tr valign='top'><td>Done and Done</td><td>Beat all levels on Normal.
</td></tr><tr valign='top'><td>Environmental Expert</td><td>Clear the Brightholme Industries.
</td></tr><tr valign='top'><td>He Wasn't So Tough</td><td>Kill a Huge Walker.
</td></tr><tr valign='top'><td>Hero of Elysion</td><td>Beat all levels on Hard.
</td></tr><tr valign='top'><td>I Hate Maize</td><td>Have no blocks at the end of a level.
</td></tr><tr valign='top'><td>Liberator</td><td>Kill 10.000 Walkers.
</td></tr><tr valign='top'><td>Line Em' Up</td><td>Kill 10 enemies in a single Penentrator shot.
</td></tr><tr valign='top'><td>Look Mom I Did It!</td><td>Kill a Big Walker.
</td></tr><tr valign='top'><td>Maximizer</td><td>Max out all perk trees.
</td></tr><tr valign='top'><td>One Small Step</td><td>Complete one level.
</td></tr><tr valign='top'><td>Perky</td><td>Max out one perk tree.
</td></tr><tr valign='top'><td>Ruin Ranger</td><td>Clear Brightholme Industries.
</td></tr><tr valign='top'><td>Skill Master</td><td>Beat a wave with only skills and blocks.
</td></tr><tr valign='top'><td>The Great Maze</td><td>Build a REALLY long maze.
</td></tr><tr valign='top'><td>Tower Master</td><td>Complete a level without using any skills.
</td></tr></table>