Here is a list of all secret achievements in Immortal Defense.
Difficulty
Awarded for completing the 1st level at 100% challenge.
Dukis Medal I
Awarded for completing 10 levels with 100% success at difficulty 100.
Dukis Medal II
Awarded for completing 20 levels with 100% success at difficulty 100.
Dukis Medal III
Awarded for completing 35 levels with 100% success at difficulty 100.
Big Medal
Awarded for completing 50 levels with 100% success at difficulty 100.
Dukis’s Highest
Awarded for completing 65 levels with 100% success at difficulty 100.
Dukis Cross
Awarded for completing 80 levels with 100% success at difficulty 100.
Awarded for 94 levels with 100% success at difficulty 100.
except 1% success difficulty 100 :
“XXX What the left hand did” and all “endless assault ”
Campagne
Awarded for completing the Fear campaign.
Circuit Medal
Awarded for completing the Circuit campaign.
Courage Medal
Awarded for completing the Courage campaign.
Cut Medal
Awarded for completing the Cut campaign.
Ortho Medal
Awarded for completing the Ortho campaign.
Danmaku Medal
Awarded for completing the Danmaku campaign.
Strategist Medal
Awarded for completing the Strategist campaign.
Pride Medal
Awarded for completing the Pride campaign.
Love Medal
Awarded for completing the Love campaign.
Turning Medal
Awarded for completing the Turning campaign.
Limited Medal
Awarded for completing the Limited campaign.
Raberata Medal
Awarded for completing the Raberata campaign.
Small Medal
Awarded for completing the Murderer campaign.
Kill and boss
Aa’s Charm
Awarded for Aa and his Points killing 100 enemies total in one level.
Bavakh Claw
Awarded for killing 500 Bavakh in one level.
Squalid Medal
Awarded for killing 200 Squalids in one level.
Blaggenthorg’s Skull
Awarded for killing 10 enemies with one Blaggenthorg.
😛
Awarded for killing 50 ‘:P’ in one level.
Hate Medal
Kill 30 enemies with a point weakened by a Hate Point.
Graveship Cross
Awarded for killing the Graveship in first 10% of the path.
Eye of Corybantes
Awarded for killing Panopticon without a Strategist Point.
Oss Medal
Awarded for killing Crosh at difficulty 100.
Ducrosh Medal
Awarded for killing Ducrosh, creating time paradox.
Panopticon Medal
Awarded for killing Panopticon at difficulty 100.
Pathspace Defender
Awarded for killing Noyaties at difficulty 100.
Miscellaneous
Awarded for completing a level at 100% visual blur.
Valid Medal
Awarded for doing 100,000,000 damage in one level.
Triangle Medal
Collect one million cache at once. ( cache is money )
Indra’s Medal
Awarded for surviving 10 minutes in a Raberata level. ( endless assault )
Upborne Medal
Awarded for 350 point bullets on screen at once.
Gnome Medal
Awarded for completing hellspace. ( secret campaign )
Minor Medal
Awarded for completing the game.