I recently just did the true ending went through the credits.....and saw that I was unable to load the save anymore....please tell me this is intentional as I wanted to grind to fully max my weapon and armor....
Was doing chrysler and got to floor 60 boss, I was in complete utter shock when the crab did a lot of damage (about 200), and almost 500 with defense down. I revived twice before inevitably dying. Only to forget when I last saved....and low and behold, I last saved right after finishing floor 30 :), RIP about almost 3 hours of progress....So yeah! DONT FORGET TO SAVE YOUR GAME!