World 4 hitless done (thanks sunflower). Final boss isn't worth any talk with the amount of help available.

Completed every achievement

So I decided to take it into myself and play BOTH ships.
(Playtime so far: 58h 28m)

Got the dual 1CC alone.

Got a score of 139.

Rest of worlds finished.
Some levels were about the same difficulty as early levels, which means that they were done in some few tries.

Finished every remaining achievement.

1CC'ed

Bucked up, started hardcore mode with help of maps. Surprisingly the scariest level, Into the Abyss, only took me one try. Mostly due to a miracle, because I ended up crossing the long upstairs bridge twice to look for my final gas canister and there were no double ganks.
Genesis took me three thries and a run where I found each page's location beforehand.
(Total playtime: 7h 10m)
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Then did the miscellaneous achievements remaining, speedruns and fire hitless.
(Total playtime: 8h 21m)

Played 2 hours before sleeping. Cleared the game and got an idea of playing.
After waking up I had several 1 or 2-hit runs before finally completing a hitless. Between that and the lights going out in the middle of a run, it was a tense day.

Did everything. First the main levels on normal and hard, then I encountered a bug that prevented me from moving to hardcore so I did the normal bonus levels instead.
Then the hardcore YOLO mode (took me like 3 hours), and then the Hard bonus levels (1h 10m)

Score of 86

Let my friend pull a few times on the UR boxes

Got a score of 62 seconds survived.

http://cdn.masochist.me/races/race-63d3b12151f939a331c7dd91_player-269468866256699392.png

Played a bit. Type C is broken so a survival clear is basically a given with enough time. Didn't do it though, plenty of lasers.

Game cleared (individual levels)

1CC

Beaten the game after some arduous struggling

All bosses beaten. Upgrades made it trivial.

Jacket Rush cleared! 70% of my deaths were due to RNG sadly

Permadeath run cleared. (Literally just speedruned the last levels and bombed the bosses while being wary of boulders)

Cleared all levels and did the speedrun under 12 minutes. Barely. Kudos to the speedrun guys.

Mikey's Hell Rush cleared, and the heaven rushes as well.

Beat all individual worts with less than 5 deaths each. The main game 25 deaths achievement was bugged.