Here is the full list of all 53 Straimium Immortaly achievements.
Amass over 111 pinky blobs in a Boss Rush!
Goldify the entire Cubicus!
Complete a crawl using the Skulli Broski character!
Eradicate all 4 alternate bosses.
Findly all monsters within the Bossyomicon Compendium!
Discoverly all rooms within the Mapography Compendium!
Unlockify the tainted Cubos Incursion game mode!
Goldify the entire Cubic!
Exterminate Queeni and make it out the Cubic alive!
Discover the Skulli character class!
Exterminate Queeni and make it out the Cube alive!
Goldify the entire Cube!
Beats a 222 hi-score in the Straima Classico Arcadey!
Findly all item types within the Itemarcania Compendium!
Discover all the hatily unlocks!
Exterminate Queeni and make it out the Cubicus alive!
Bring me the head of the Queeni Emperess!
Amass over 333 pinky blobs in the Cubicus!
Grasp the biggy key protected by a huge skulla!
Discover the Pinky character class!
Amass over 111 pinky blobs in the Cube!
Grasp the biggy key protected by a huge whirla!
Grasp the biggy key protected by a huge smasha!
Grasp the biggy key protected by a huge spewa!
Survive the tutorial!
Exterminate Cubicus Queeni in under 35 minutes!
Exterminate Cube Queeni in under 15 minutes!
Exterminate 10 huge meanies in a Boss Rush!
Discover all the mutatorily unlocks!
For I gazed within its soul, and found only perfection.
Amass over 222 pinky blobs in the Cubic!
Exterminate Cubic Queeni in under 25 minutes!
Complete a crawl using the Fledgling Broodling character!
Complete a crawl using the Robotica Orbica character!
Complete a crawl using the Shamanic Monk character!
Complete a crawl using the Losty Astronauty character!
Complete a crawl using the Buttsmad Pinky character!
Complete a Cubicus crawl with the Empty Boxes and No Radar mutators active.
Complete a Cubicus crawl with the Asian Mode and Ball Busta mutators active.
Complete a Cubicus crawl without harming a single innocently little cutey pinky.
Complete a Cubic without ever bothering to use your Special Fire or Ninja Power. You must also say "Scrumdiddlyumptious!" whenever devouring Bossily hearty innards.
Complete a crawl using the Paddy Locky character!
Discover the Broodling character class!
Complete a Cubicus crawl without ever being healed.
Discover the Robotica character class!
Discover the Monk character class!
Discover the Astronauty character class!
Discoverly all dudes within the Beastisaurus Compendium!
Findly all weapon types + powas of the Weaponology!
Murderise 5 bosses in a crawl using only lvl 1 guns!
Beat the foul filth of a Cubos Incursion!
Exterminate Incursion Queeni in under 45 minutes!
Amass over 555 pinky blobs in a Cubos Incursion!