It's a nice touch-up, but I I like the older version of the 1st and 2nd phase, 3rd phase is brilliant.

Roland Boss - Library of Ruina Ost

Boss theme of Chapter 3 in Limbus Company.
No rights belong to me, all to Project Moon and/or Mili.

Not great quality
Taken from here: https://youtu.be/tupUX9LVhLw

Between Two Worlds (Kromer Theme) - Limbus Company

Mili - Between Two Worlds -Realm of Darkness- (Limbus Company)

Limbus Company OST - Middle Finger Toujou [Extended]

the creator 
https://www.youtube.com/watch?v=ygA_AbjyPRE

[Limbus Company] Mili - Compass (chair Mix) (not mine)

WE ARE GOING TO CATHERINE WITH THIS ONE 🗣️🗣️🗣️

Limbus Company Soundtrack - Through Patches of Violet (In game mix)

Game link: https://itsallyourfault.itch.io/to-kill-a-fairytale
Art by Nidoto (PsuedoHeaven on Twitter)

Queen of Heart's Theme - To Kill A Fairytale OST

Concrete Skies

Lobotomy Corporation |OST| Emergency2

Not by me. Provided by project moon. From the game Library of Ruina.

Between Two Worlds (Kromer Theme) - Limbus Company

Kylotl