Now for the walkthrough...
I'd like to mention that this guide WILL be updated when more title updates get added in the future.
Sokomonster has a total of 30 levels and each level will have its own text solution.
Refer to these following phrases in the level solutions:
U - Up
D - Down
L - Left
R - Right
One letter refers to one tile or interaction in the level.
Let's get started.
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Level 1
Once you load up Level 1, go ahead and move RR, this will push the car till it hits the wall. Now press 
to undo a move, which will unlock:
Now hold down 
to unlock:
Next, we will do RR and press to undo again, and instead of restarting the level this time, we'll do R and press 24 more times to unlock the two following achievements:
The actions continued to add up over time, since you never restarted the current level again.
After getting all those achievements, go ahead and hold down to restart the level. There's an achievement where you have to complete a level in 30 to 40 seconds. So, we're going do the following moves: RDRUU LURDD RRRRR UURRU ULLLL LDL
BEFORE doing U, wait till the timer at the top of the screen is between 30-40 seconds. Completing the level will unlock the following:
If you accidentally pressed U before waiting, you can easily load back up Level 1 again if needed!
Level 2
Now we'll be introduced to the ability to push cars against each other.
Go ahead and make the following moves: RRRDD LDDR
Once the cars hit each other, you'll unlock:
Let's finish the level: RRRRR RDRUR U
Level 3
This level will introduce the addition of buildings with multiple floors. They require more than one car to destroy them, so keep that in mind. Go ahead and perform the following moves:
LLLDD DLDDL ULUUU RDRRR RRUUL LDDLD RURUR DURRR RRURD DDDRD LLLLL LULDL LDR
Completing the level will unlock the following:
Level 4
If you haven't realized already, every car will have a certain color corresponding with a certain building. This won't limit any sort of completion to the level; therefore, you can still use a different colored car for any colored building. I recommend to just follow along with the text solutions anyways.
Make the following moves:
RRDLD DDRUU RDDLD RRRRR DRU
Level 5
URRRR RRRDD LUULL LLLLD DRULU URRRR RRRUR DDLLL LLLLD DDDLU LUUUU RRRRR RRRRU RDDDR DLLLL DLULU
Completing the level will unlock the following:
Level 6
RRRRU UULUU RDRDD DLLLL UURDD RRRRR DRULU UUURR RDDLL LDLLU UUULU RDDRR DRURR UULLL LLLLD LU
Level 7
DLDDL ULUUR RRRUR DLLLR RDR
Completing the level will unlock:
Level 8
RRDDD RULUU UURRR URDLD LLURR RURDD DLDRD DRRRU RDULL DDLDR RRURD
Completing the level will unlock the following:
Level 9
RRUUU RRRDR RRDDL LLLUL LLDDR UUUUL URDRR RRUUU LLDDD DLDDR DDRUL UURRR RRRRU RDLLD LLLLL URURR DLDDR RRRRR URDLL ULLLL URRRR RRRRU RD
Level 10
RRURR RRDLU UUULL DDDRD LDDLL URRUL LLLLL ULLLD DRRUL LUURD DRRUL RRRRU LUULL LDDDD RDLLL LLLDL UUUUR RUURU L
Completing the level will unlock the following:
Level 11
Now we have entered the Military Base. There's an achievement that requires you to NOT use the undo button in a Military Base level. You have plenty of chances to do this, but I recommend getting this one out the way immediately, so you don't have to worry about it. If you accidently mess up, you can restart the level completely with to try again.
Perform the following moves: DDDLU UUULU UULLD LLDLL LUURR DDDDR RRRRR ULDLL LLLUU RURRD DDRDD DLLLU URRRR URDDD RDLLL LLLUL LDLLD RURRR RDDLU LUUUU ULURR DDRRR UUULL D
Assuming you didn't press undo, you will unlock:
ProfessionalBeat a level in the Military Base without using undo
Level 12
RRRDD DRRRR UURDD RRRRU UUULL LURRU RDDLL DDDDL LLLUU UURRR RRRUR DDDRR ULLLL LLLLL LULDD DLDRL UUURD LDDDR
Level 13
UURRR RRRDR RRRRR RDDDL LURUU UURDD DDDRD LLLDL UUUUR ULLLL LLULD RRRRR RRURD DDDDR DLLUU UULLL LLLLL LLLDD DDDRU UUUUL URRRR RRRRR RRURD DDDDL DDLUU URRRD LLLDL UUUUR ULLLL LLULD RRRRR RDDDD RRRDL LLLLD LURUR UUUUU RURDD DDDDR DLLLL LDLUR URUUU UULLL LLLLD RRRRR RRRRU RDDDD DRDLL LLLDL U
Completing the level will unlock the following:
Level 14
LDDDL LURRU LDLLU RUUUU UULLD DDDRR DDRRR RULDL LLLUR UUUUU ULLDD DDRRR ULDDD RRRRR UUURU LLLLL LLLDL URDRR RRRDR RUUUR ULLLL LLLLD LUUUU LURRR RRRDD DRRRR UUUDD LLLLL LLLUL DRDRR ULLLU LD
Level 15
We are now introduced to craters! Craters will prevent a car from proceeding in its original direction, allowing you to hit it anywhere.
Make the following moves:
RDDRR RRRDR RULDD DLLLL LLLDL ULUUU RURRR RRRRR
Completing the level will unlock the following:
Level 16
DDRRR RDRRR RULUU UULLD DLDDR LDDRU URUUU LURRR RRURD DDDLD RDDRU UUUUR ULLLL LDLUL UURRR RRRRR RURD
Level 17
ULLLL LLDDR DRRUU URURR DDLLL DLURU ULLLU URDDR DDLLL UULLU URDDD RDLDD LLURU RRRRU RURRR DDRU
Level 18
RRRRD DDLLL LDDLL UURDD RRUUU UUULU RRRRR RDDDR UULUR RRRUU LLDDD DDLDR DDRRU UULUU URRDD LLLDL UUULU RDRDD DDRRU LLLLL LDLUL LUURR RRRRR RDRUU LUUUR RDDLL LDLUU URULD DRRRD DLLLL LLLLD LULLU URRRR RRRRD RURRU ULLLL DLUUU RUL
Level 19
RRUUR DDLDR RRDDL UUUUR RRRRR UUULL LLLDD DDDDL DRUUL LDRRR URDDL DRUUU RRRRR ULLLL DLURR RRRUU ULLLL LLDDD LLURR RUURR RRRDD DDRDL LLLLU LLLLL LLURR RRRRR RRRDR ULLLL LUUUR RRRR
Level 20
UUUUR RDDDR DLLLL DLUUR ULLLU LDRDR RRRDD DDRDL LLLDL UUUUU RULLL ULDRD RRRRR RRRDD DDRDL LLLLL LLDLU UUUUR ULLLU LDRDR DDLLD LLUUU RRRRR RRRUR DDLDR
Completing this level will unlock:
Duty callsComplete all levels in the Military Base
Level 21
We are now introduced to fire! Just like buildings, all you have to do is push all the cars in the fire to complete the rest of the levels. It'll be a mix of both buildings and fire, but both have the same mechanic.
Carry out the following moves: RRDDD RRULU UURDD DLLLL LLUUU LURRR RRRUU LLLDD DLDRU RRRRR RRURR RRRUU ULLDL LLLLL LLLUL DDDDL DR
Completing the level will unlock:
Level 22
RDRUU URRRR DDLLD DLLUU ULLLD LDDDD RRRDR RURUU LURUR UURRR RRRDD DLLLL LDDDR RRRRL LLUUU LURRR RRURD DLLLL DDDRR RR
Level 23
URRRR RRRUR DDDDL DRULL DRLLU LLDRD DRRRR RRRRR RUUUL UUURR RDRDD LULLL LDDRD RUUUR ULDLD LLUUD LLUUU URR
Level 24
DDDLL ULUUR RRLUU RDDDD DLDRR DRUUU ULURD DDDRR RUUUR ULLLL LULDD DRDLU UUURR RRRDD DRDLL LLLLL ULDDR DLUUU URRRR DDDRD LLLLL LULDD RDLUU URRRR RURDD DRDLL LLLLL ULDDR DL
Level 25
LUURR RRRRU RDDLL LLDDD DRRUR RRUUR RRRUL LLLUL DDLLL LDDDD RRURR RRDLL UUUUL LLLLD DDDDL DRURU RDDLDR
Level 26
ULLLL DRRRR DDDDR RRDRU RUUUU ULLLL LLLLL LULDR DDDDD LLUUU RRURD DLLDD DRRRR DRURU RUULU LUULL LLDDL LDDDD RRRRU ULDDL DRRRR RDRUU UUULL LLUUR RRRRR RRRDR U
Level 27
LLLUU URRUU RRRRR RRRRD RULUU UURRD DLLLL LDLUL LLLLD DRRRR ULLLL UURRR RRRRR RDRUL UUUUR RDDLL LLLDL ULLLL LLDDL DDRRR RRRUU ULLLL UURRR RRRRR RDRUL UUUUR RDDLL LLLDL ULLLL LLDLL URRRR RRRRR RRRDR ULUUU URRDD LLLLL DLU
Level 28
LLLLD LLDRR RRRRD RUUUU RULDL LULLL DLUUU ULURD DRRRD RRRRU UUULL LDRRR DDDDR DDRRR UULLL LLLLL LLDLU UUULU RDDRR RDRRR RUUUU LLLDR DDDDD LDRRD RUUUL URRRD RURRR DLLLD LU
Level 29
You'll be unlocking your final achievement here, but I recommend completing all of Levels 29 and 30 for future title updates, just in case.
Make the following moves: LLLLU UUULD DDDLD RRRRU RRRRR RRRRR DLLUU UULDD DDRDL LLLLL DLULL DRRDR UUUUU LLDDD LDRRR DRUUU ULLUL DRRRR DDDLL LDLUU ULLDR RRRRR RDRUU UURUL LLLLL LLLLL ULDRR DDDDL LLUUR RRRRD RURRR UUUUL L
Completing the level will unlock:
Level 30
DDLLL UUULU RRRRR RRUUL LLDDD RDLUR RURDD DDRRR DDRRU LLDLU UUUUR ULLLL ULDDD DRDLL LLULD RRRRD DLLLU LDDLU ULLLL LDLDD RRUUU URUL
You should now have all 2000G. Congratulations!!!