Midnight is Lost

All text solutions here; The tutorial level counts as a completed level towards the total of 30, so you only need to complete 29 levels and the tutorial level to get the final achievement.
U =
R =
D =
L =

TUTORIAL LEVEL: FOLLOW THE LINES OR D, L, Dx2, R, D

LEVEL 1:
Dx2, L, Dx2, R, D

LEVEL 2:
R, D, R, R

LEVEL 3:
Dx2, R, Dx2, Lx2, Ux2, Dx2, D

LEVEL 4:
A). R, Dx5, R, L, Dx2, L, L MINIGAME A
B). D, R, Dx4, L, Dx2, L SOLUTION

LEVEL 5:
Rx4, Dx2, Ux2, R

LEVEL 6:
Rx2, D, R, U, R

LEVEL 7:
Rx4, Lx2, U, Rx2, Lx2, Dx2, Rx2, U, D, Lx2, Ux2, Rx2, U, R, Dx2, L, R, R

LEVEL 8:
Ux3, L, U, Rx2, D, U, L, U

LEVEL 9:
Rx4, Dx3, Ux5, Dx2, R, R

LEVEL 10:
A). Rx5, Dx3, L, R, U, R MINIGAME B
B). Rx4, Dx2, Ux2, L, D, U, Rx2, Dx2, R SOLUTION

LEVEL 11:
Dx4, R, D, L, D

LEVEL 12:
D, R, Dx2, R, D, L, D

LEVEL 13:
D, Rx2, U, R, U, R, U, R

LEVEL 14:
Rx2, U, D, U, D, R, D, Rx2, U, R

LEVEL 15:
Ux2, Rx2, Lx2, Ux2, Rx2, D, U, L, U

LEVEL 16:
Ux3, Rx2, D, Ux4, Rx2, Dx3, L, R, Ux3, L, U

LEVEL 17:
Ux2, R, U, L, U, L, Dx2, Rx3, U, L, U, L, U

LEVEL 18:
Ux2, Rx2, Lx2, Ux3, Rx3, Dx3, L, R, Ux4

LEVEL 19:
Dx3, R, D, U, L, D, L, U, R, U, Lx2, D, R, D, Rx2, D, Ux2, R, D, R

LEVEL 20:
Ux5, Rx2, Ux2, Dx4, L, U, Lx4, U, R, Ux4, L, Dx2, R, Dx2, Rx6

LEVEL 21:
Rx3, L, U, R, U, L, Dx3, Rx3, D, L, U, Lx2, Ux3, Rx3, U, L, D, Lx2, Dx2, Rx2, D, R, Ux2, L, R, Ux2, L, U

LEVEL 22:
Rx2, D, Rx4, U, R, D, L, D, R, Ux2, Lx2, D, Lx3, Ux2, Rx3, D, Rx2, D, L, D, R, Ux2, Lx3, Rx2, U, Lx2, D, U, Rx2, D, U, R, D, R

LEVEL 23:
Dx3, R, D, R, Dx2, Ux2, L, D, Lx2, U, Dx3, Rx3, Ux3, L, U, Lx2, Dx2, Rx3, U, R, D, Lx4, Ux2, Rx2, Dx2, L, Rx2, Dx2, Lx3, Ux4, Rx2, D, Rx2, D, R

LEVEL 24:
Rx2, D, R, D, Rx2, U, Dx2, R, Ux4, L, R, D, L, D, R, Ux2, Lx3, U, R, D, R, U, Lx2, Dx3, L, U, R, U, L, Dx2, Rx3, U, R, Dx2, Lx2, U, L, D, Rx2, Ux2, Dx2, Lx2, U, L, Ux2, R, U, Rx2, D, R, Dx2, L, Dx4

LEVEL 25:
Rx4, U, Rx3, D, Lx4, U, R, D, R, U, Lx3, D, R, D, L, Ux2, Rx3, D, R, U, L, Ux4, L, Dx2, R, Dx2, L, D, Rx3, U, Lx2, D, L, U, Lx2, D, Rx3, L, U, Rx4

LEVEL 26:
Rx2, U, R, L, D, Rx2, U, R, U, L, Dx3, Rx2, U, Lx3, D, R, Ux2, Lx2, Dx2, Rx2, U, R, U, L, U, R, Dx2, L, D, Lx2, U, Rx2, D, R, Ux3, L, D, R, D, R, D, Lx2, U, D, Rx3

LEVEL 27:
L, Dx3, R, Dx2, R, U, R, D, Lx2, Ux2, L, U, R, Dx2, L, D, R, D, L, Ux2, Rx2, D, R, U, Lx3, D, R, U, Rx2, D, R

LEVEL 28:
Dx4, R, D, L, Ux2, Rx2, Dx2, Lx2, U, Dx3, Rx2, Ux2, L, R, Ux2, Lx2, D, L, U, Rx3, Dx4, Lx2, Ux2, Dx2, Rx2, Ux4, L, D, R, Dx3, L, D

LEVEL 29:
Lx4, Rx2, D, Lx2, U, L, R, D, L, D, R, Ux2, L, U, L, D, Rx2, D, Rx2, Ux2, Lx2, D, L, D, R, D, L, Ux2, R, U, Rx2, D, Lx4, U, R, D, R, U, Lx2, Dx2, Rx2, L, D, R, D

You can find my video to get all 1000G in this game here: Luckily, you don't need to complete level 30, as this specific achievement pops when you reach it. All solutions for the game's levels are visible on screen for each level in the video.