<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>Aliens Go Home</td><td>Finish 3 missions on 3 stars.
</td></tr><tr valign='top'><td>All Clear</td><td>Finish 12 missions on 3 stars.
</td></tr><tr valign='top'><td>Defcon 1</td><td>Fire all superweapons in a single wave.
</td></tr><tr valign='top'><td>Endangered Species</td><td>Collect 100 Dancing Aliens.
</td></tr><tr valign='top'><td>Fiscal Responsibility</td><td>Save 1000 or more credits in a single mission.
</td></tr><tr valign='top'><td>Gun Forest</td><td>Place 50 weapons in a single mission.
</td></tr><tr valign='top'><td>Industrial Complex</td><td>Build all weapons in a single mission.
</td></tr><tr valign='top'><td>Quality Over Quantity</td><td>Upgrade 5 weapons to the max in a single mission.
</td></tr><tr valign='top'><td>Take A Day Off, Doc</td><td>Finish 5 missions without the Research Unit.
</td></tr><tr valign='top'><td>Xenocide</td><td>Kill 30000 aliens.
</td></tr></table>