Here is the full list of all 40 Immortal Defense achievements.
Awarded for completing the Cut campaign.
Awarded for completing the Fear campaign.
Awarded for killing 200 Squalids in one level.
Awarded for doing 100,000,000 damage in one level.
Awarded for killing 500 Bavakh in one level.
Awarded for completing a level at 100% visual blur.
Awarded for completing the 1st level at 100% challenge.
Awarded for Aa and his Points killing 100 enemies total in one level.
Awarded for completing 50 levels with 100% success at difficulty 100.
Awarded for killing 10 enemies with one Blaggenthorg.
Awarded for completing the Circuit campaign.
Awarded for killing 50 ':P' in one level.
Awarded for killing Panopticon without a Strategist Point.
Awarded for completing the Courage campaign.
Awarded for completing the Danmaku campaign.
Awarded for killing Ducrosh, creating time paradox.
Awarded for completing 10 levels with 100% success at difficulty 100.
Awarded for completing 20 levels with 100% success at difficulty 100.
Awarded for completing 35 levels with 100% success at difficulty 100.
Awarded for completing hellspace.
Awarded for killing the Graveship in first 10% of the path.
Awarded for 94 levels with 100% success at difficulty 100.
Kill 30 enemies with a point weakened by a Hate Point.
Awarded for completing 65 levels with 100% success at difficulty 100.
Awarded for surviving 10 minutes in a Raberata level.
Awarded for completing the Limited campaign.
Awarded for completing the Love campaign.
Awarded for completing 80 levels with 100% success at difficulty 100.
Awarded for completing the Ortho campaign.
Awarded for killing Crosh at difficulty 100.
Awarded for killing Panopticon at difficulty 100.
Awarded for killing Noyaties at difficulty 100.
Awarded for completing the Pride campaign.
Awarded for completing the Raberata campaign.
Awarded for completing the Murderer campaign.
Awarded for completing the game.
Awarded for completing the Strategist campaign.
Collect one million cache at once.
Awarded for completing the Turning campaign.
Awarded for 350 point bullets on screen at once.