HOW TO LAVIFY
Install the Loenn Scripts mod.
Then, under Scripts, choose Lavify.
You may control whether lava is placed under spawnpoints.
Be careful! You cannot undo the Lavify operation!

PROLOGUE
TAS by Mayday: https://www.youtube.com/watch?v=WfZxyvKqY7A
RTA never done
3 unavoidable mods
  - 2 for Granny
  - 1 for Bird
1 cutscene mod
  - Bridge for Granny
No cheat mods!

FORSAKEN CITY
TAS by Sernor: https://www.youtube.com/watch?v=PhPWVbUBvW4
RTA FC by Mayday: https://www.youtube.com/watch?v=kDU5zLi1RTQ
No unavoidable mods!
1 cutscene mod
  - 1 for Theo
No cheat mods!

OLD SITE
TAS never done
RTA never done
MIX FC by Mayday: https://www.youtube.com/watch?v=4ERIIRhYbkQ&t=447s
No unavoidable mods!
4 cutscene mods
  - 1 for Mirror
  - 1 for Dream Call
  - 1 for Theo
  - 1 for Awake Call
No cheat mods!

CELESTIAL RESORT
TAS never done
RTA never done
No unavoidable mods! (Assuming towels -> books -> boxes is possible) (To skip the front desk, demo-dash into the berry room above the first key)
1 FC unavoidable mod
  - 1 for Front Desk (a_05)
11 cutscene mods
  - 2 for Front Desk (a_05)
  - 1 for Meet-up (a_14)
  - 2 for Huge Mess (b_02)
  - 1 for Books (b_10)
  - 1 for Theo Towels (b_16)
  - 1 for Elevator Shaft (c_00)
  - 2 for Demo Dash Room (c_03)
  - 1 for Presidential Suite (d_00)
4 cheat mods
  - 2 for Room Before Demo (c_02)
  - 2 for Room Before Suite (c_08)
3 FC cheat mods
  - 1 for Big Fall (a_21)
  - 1 for Room Before Key (c_04)
  - 1 for Double Berry Room (c_07)
Points of interest
  - Heart room (Towels -> Books -> Boxes) is required to not have an unavoidable FC mod