Here is a full walkthrough with all levels guide for the Fluffy Milo game.
Introduction
U = UP
D = DOWN
L = LEFT
R = RIGHT
World 1
RR
Level 2
LDR DRU
Level 3
URR DLL
Level 4
DDLUU LURR
Level 5
UUURR DRDL
Level 6
URR DRDL
Level 7
UR
Level 8
DDDDL LURDR UDRUU U
Level 9
ULLRR DDLLU UDLU
Level 10
DLULU LDD
Level 11
LLDRU RDDUR RULLD LLUUR DLDRU RD
Level 12
UUURR DDDRD LLRUU UURRD LULDD D
Level 13
URRDD LLLRR UURUL
Level 14
DRDDR URULLL
Level 15
RDRDL LLDLU RRUU
World 2
RDLDD LURUU LLDRR RUUUU RDLDR
Level 17
LURRU RLURR URDLD DULDD
Level 18
DLLUL URRLL UURRR RULUL DRDLU LDD
Level 19
UULDD RDLUU ULLDR RURDD LDRRL UUUUR URDD
Level 20
RRUUU LUULD DRRDD DLLLL LURURR
Level 21
ULURR RDRUL LLUUU RDDDL DRRRL LUUUU RRRDD
Level 22
UURRD RULLU ULDDL DRRUU UURRR DD
Level 23
RURRD LDLLD LURRR DDDLL LDLU
Level 24
URULL LDDDD LUDLL URRRR LLLUR DRRUR UULLDD
Level 25
LLDDL LDDDR UULUR RRRLL LLURR URDUR RDDD
Level 26
RRRUU LDULL RDLRR DRDLLL
Level 27
RRRUU RRDUL LDDRD DRRRD LDLDL UUDRR URRDL LLRUL LLL
Level 28
DRRDD DRRRL LLURD RUUDL LUULL DDDRR RRDRU ULLLU UURRU UURDR DL
Level 29
LLLLL DLDDD DDUUU UURUR RRDDL URULL RRDDD DDDDD RULUU RRDLD
LUUUR ULLRR DDRRR DLLLD LUUUU RUL
Level 30
LLLLL DLDDD RRURU URULL RRDDD DRUUL UURRD LLULD DRDLR RDDRR
RDLLL DLU
World 3
RRURU LRRRD LLULD DRURR DDDDL LUUUU LURRR DDRDL DRRLL DLLUU
ULLLD LDRRR URUUR RDDDD LLUUU URULD LDRUR RRUUU LURR
Level 32
LLLLL UUURU ULDDD DURDD LULDD ULLUR RRURD LDDDD DRRRR DRULL
LLLUU UURRU RDDUR RUURD RDLL
Level 33
URDDR DLDLU DLLLD RRRDR RRRRU URULL LULDL DRDDL ULURL DDDDR
ULURD RRRUR D
Level 34
LDDDD DDRRR RLLLL UUUUR RRRRR URDLD DDDDR RULDL UUUUU RULDD
DDLUU RULLL LLRRR RURRU UUUUL DLDR
Level 35
UULLL LLRRR RRDDD DLUUU RULLL LULLD URDRR RRDDD DDDRD LLLLU
LDRRR RUUUU RRRRR DLLLL ULDDD RDLLL LLRDL URRRR RDRR
Level 36
LLDDD LLDDD RDDDR UUUUL URRLD DDDRR ULLUU RDLDD RRULD LUUUU
DDDDL URULL LLLLR RRRRD RRRRU LLLLL LL
Level 37
LDDDD UUURR RRRRU UUULD DDRDL LLLDL LUURD RRDDR RRDLL URRUD
LLLUU RRDDL DRUUU R
Level 38
RURRD LLLLL LLDLU UUURU LDLUD DRRRR RRUUU URUUL DDDDD RDLLL
LLRRR RRDDL LLLLL UUULU RDRUD DRRRR UUUUR DDDDD RDLLL LLLDL
UUUUD RRRRR RUUUU URRDD LLULD DDRDL LLRRR UUURR UUULL LL
Level 39
UUURR RRURD DUURR RURDL LLLLD LLLLD DDDRD DDDLU RUULL DRRUU
RRRUR DDRDD DDRRU UUUUU RUL
Level 40
DDDDD RDLLU UUULU RURDD DDDUU UUUUU ULDDD DDDDR RRRRU RRULL
RRUUU ULDDD DRDLU LDULL LLL
Level 41
URRRR RRLLL LLLDD RULUR RRRRL LLLDD RULUR RRDRR RUUDD LUUDD
LUUDL LLLUU UURRL LUUUL LDLUR UURUR DDDLD RR
Level 42
RUURR DDDDD DRLLD DDLDR RRRRL LLLUU RRRUU UURUU UULLL LLLLU
LLDDR ULURD DDDDD DDURR RRDDD LLLUU LLDRU RDLUU RRRRD DRRRU
ULLUL DDDDL DR
Level 43
RDDRD LURRR DLULD DUURR RRURR DLLLL LDLLU URDRR URURD LDRRU
RDRDD DDLLD RDRUU
Level 44
RUULD RDDLL URRRL DDLUU LLDDD LLUUR ULDLU RDDDD DDRDR RRUUU
URUUL DRDL
Level 45
DDDLD DRUUU URULL LLDDL LLLLU LDDDU URRRR RRDDR DRUUD DLDLU
UUURU ULLLL RRRDR DLLLL RRRDD DDDDD LLLLL LURDR UUUDD DRRRR
DRUUU UURUL DLUUU RUL
World 4
RRRRR URDDL DDLDD DLLUL DDLLD DRUDD RRUUU UUDRR ULLLD LUUUU
DRRDD RDLRR RUURR RDURR DLLLL DDRRU DLLUU RURRD LLULD LLLL
Level 47
DDLUR UULUU RUULL DRURD LDRRL LULLL DDDLR DRDRR RLLUR RRLLL
LUUUL URRRD RUULL LLDLL UURDL DRURD DUULU URRUR DDDLD RRDRU
LLUUU LLDLL LLURR RRRUR DDRDD LLURD RULLL DLU
Level 48
LLDDD LUUUR ULDDD DDDLU RULLL DRRRD RUUUL URRRL LDDDD DLLLU
ULURR RDRUU UDDDD DRRRD RRUUL LLLRR DDDLL LLLLU UUULU RDRUD
DDRRR ULDLU UUUU
Level 49
UUUUR ULLDL DDDDR RDRRD DRDLL LURRR RULLR RRUUU UURUU LDDDD
DRDLU UUUUL LLULL DRRRR URDDD DDUUU RDUUL LLLLL DDRUL URRRR
RDRU
Level 50
RDDDL LDLLU UUUDD DDRRU LRRRU UUUUL LDLLL ULDDU RRDDD DRDLL
RUUUU ULURR DRULL LLUUR DLDRR RRRRD RRULL LRDLR RRRRU UULDR
DLRDD LLLUL LLLUL LDRRL DDDDR RRRUU UULUR
Level 51
UURDR ULLLD DDDDD DLDRR RLLUU UULLL LLULD DDDUU UURUU RRRDD
UURRU ULDRD DDDLL UUURU RDDDD DDDLD RRLUU UUUUU UUURD DDRDL
ULDDD DDLDR UUUUU ULLLU RRURD DDDDD RDLUU UUULL LLLLL URRRR
RRURD DDDDD D
Level 52
ULDDD DDDDL DRUUU RUULU UURRR RRRRD DDDDD DLDRL UUUDD LLLDR
RRDRU UUUUU UUUDD LLLLL LULDR DLURR RRRRR DRRUL LLLLL LLULD
DDUUU URRRU RURDL DLLLL URRRR LLLDD DRRRR RUULL LLLUR RRURD
LLLLD DDRRR RRUULL
Level 53
LLLRR RDDLL LDLUR ULRUR RRRDL DLDDR RRUUL LLLUL LDDRL URDDD
DRRUL DLUUU RRRRR DRRUL LRRDD LLLLL LRRDD DLLUD RRRUL URLLL
RUUUR URDDD DDDD
Level 54
DLLDL UUULL RRDDD RUULU RDDDD LLDLL UUUUU RRRDD DDLLR RUUUU
LLLDD DDDUR RRRDL LRDDR ULUUR RRURR DRRUL LLLLL ULDRD LULDR
DDRUL URR
Level 55
UUULL DDDDD DDLDR RLUUR RDDUU LLUUU LLLUU RRRUR RDLUL DDDDD
DLDDR ULURR LLDDD DRUUL UURUU ULLLL LLULD DDDUU ULDRD LULDD
DDDRD LUUUU UURUU UURRU RDDDR DLLLU LDDRD LLLLR RRUUU UURRU
ULDDL DRRRR RRRRR LLLLL LLLUU ULLLU URRUR DDDDD DLDRR UUUUL
UUULU LDDDL DRRLU URRDD DDLDR RRLDD RRRUU UUUUU RULLL LLLUL
DDDLD RRLUU RRDDD DLDRR
Level 56
UULUL LULLU ULDLD RRRLL UUUUU URRUR RRDRR ULDLU LUULL LLLLL
LLRRR RRRUU ULDDR DLUUR RRULD LLUUR DDLDD LLLLD DLLLU LDDDD
DDDRD DDRUU UUUUU RUULD RDLUL UUUUR UULDD DDDUU URDDL DRRUR
ULDLL UURDD LDRUR DDRDR RRURD DDDLD RRRLL LUUUU LLLUL LDRRR
RRURD DDDLD RRLLU UUULL LLUUU RDDLD RRRRU RDDDR DLDLU U
Level 57
DDRRU LDLLL LLLLL ULDLL LULLD RURDR UUULD RDDLL URDDD LDRDD
DDRRR RDDDD DRDLL LRRUU UUUUU RRRRD RRULL LLLLU LDDDD RDLLU
UUURR RRRRR DDDDD RUUUU RULLL LLLUL DDDDD UUUUR RDURR DLLLL
ULDDR RDRUL UURRD LULDD DUUUU UUUUU RRRRR DDLLL LULDD DDDD
Level 58
DDDLL UDRRU ULLLL ULDRR RRRRR RRDLU LLUUU UURRR RDLLL ULDDD
DLDRR LUUUU UULDD UUUUR RULUU URRDL ULDRD LLLLU LDDLD DDDLL
LUULU RDLLL DRURR DDLUR ULLLU LULUU RRRRR RRRLL LLLLL LDDRD
RDDRR RDRRR UUUUR UUURU LRDDD RRRRU RRRUL LLULD DDDDD DRDLL
LLLDL UUUUD RUU
Level 59
RRURR DDLRU ULLUU UUUUR UURRD RUUDD LLLLL URRRD RULLL LLLDR
RRDRU UULUR LDDDD DDDDD DDLLL LLDDR ULURR RLLUU RURRR LLLLL
LLLLR RUUUU UUUUU DDDDD DDDDR RRDDD LLLUU UUUUU ULURD RUUUU
UUDDD DDDLL LLURR RR
Level 60
DRDRD DLLLL LLDLU UUUUU RULLL LLDLU DLLUL DRRRR RRRRD DDDLU
UUURU LLLLL LDLUU URULD DDDRR RRRRD DDLLD RURRD DLUUU UURUL
LLLLL LRRRR RRRDD DDDDR RRDLL DLUUU UUULU URRDL LLLLR RRRDD
DDDDD DRDDL UUUUU UUUUU DDDDD DDDDL LLLLL DRRRR RURRD DLUUU
UUUUU UULUR RDRRR UURRD LLUUU ULLLR RRURD DDDD
Thanks to Na for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.