300 Days of Heaven:

I've played Heaven Burns Red for 300 days straight now, with the official log in stat to prove it.  In this time I've managed to secure 92 SS Memoria, get all my elemental rings to max level, get all my elemental bracelets to max level, get all my earrings to max level, and have a close to ideal collection of euphoria necklaces and charms.  I have an SS Memoria of 48 of the 50 characters currently available.

Most of my characters are max level, but a large number aren't.  Likewise I've skill evolved most of the available skill evolutions, but a large number aren't.  Tama is my sole rank 6 title badge holder.  The rest of Squad 31-A is rank 5, as are many prominent girls from other squads -- Vritika, Sumomo, Isuzu, Ichiko, Hisame, Chie, Mari, Miya and Yuina.  The remainder are either rank 4 or 3.

Among my most used characters, most of their skill levels are maxed out, but a goodly sum aren't.  That's definitely my current area of focus to fix.  As for characters I don't use their skill levels are all bottom of the basement.

All of my characters have at least 1 reversion, with my most used having 5.

I currently have 4 level 4 limit break girls -- Tama, Sumomo, Tsukasa and Vritika.  Chie will join that esteemed list later this month.  Strangely my strongest squad doesn't use all of them together, they're scattered here and there in different squads.  That's because sharing elemental affinities is more important than raw power.  I have 7 talent unlocked SS Memorias -- magical girl Tama, fireworks Yuki, swimsuit Tsukasa, red riding hood Karen, pajamas Hisame, swimsuit Sumomo, and shrine maiden Megumi.

There are two available anachronies I haven't beaten yet -- Apophis and Skullfeather.  I'm not even allowed to challenge Skullfeather until I beat Apophis, but it's clear I'm nowhere near beating Apophis.  This is the biggest roadblock for me in terms of game progression.

There's also a secret boss in the current event that's beyond my strength, which is pretty crazy, considering how much I've invested into this game.

I've completely mastered the Clock Tower, but haven't made any progress when it comes to the Hell Mode version.  I've beaten all the songs in gig mode, but can't defeat them at hard difficulty or higher.  55 Heaven Burns Red songs have made it to my Music Hall of Fame.

I've beaten all the orb bosses, most of them at their highest level.  I could defeat the remainder at their highest level but the reward for defeating them is too small so I've been ignoring them.

I can reliably navigate my way all the way down to floor 35 of the Oubliette of Tears and then all the way back up to defeat Omega Death Slug.  This is the mathematically best possible outcome -- because each fight consumes 5 energy at minimum, this is as far as anyone anywhere can go, as I'm beating every fight with that minimum 5 energy consumption.

I've played through the main storyline twice, and cried many more times than twice in doing so.  I'm missing one art panel from the latest Chapter 5 Part 1, probably because I haven't chosen all possible options in this newly released story.  I'll get around to doing that eventually, once the story isn't so fresh in my mind.

I've gotten all the useful loot from all the events, and of course beaten them all.  It might be fun to redo them all just to enjoy their stories at some point, like I have the main storyline.  I've collected all the socializations and recollections available.  31 characters from this story have been inducted into my Wonderful Fictional Characters Hall of Fame, they're all so attractive.

After playing for 300 days I've done around 90% of what's possible to do in the game.  But that last 10% feels like it will take years to conquer.  This benchmark is just the beginning of my journey.