Smart Moves

Trick out the gladiators
RRRLR DDRDD DDRRR RRRRR LLRLR LRLLL LLLLU UUURU UDRUD [go open the chests]

Use spiders to the maximum
RRRRR RRRDR RLLRL RRUUD DLDDR LLLLU URRRL RDDRR RRDDU DLL [checkpoint]
URRRR RRRRL RLLLL LUURU LULLL RURRU RRDDR RRDDR RRLLL LUUUR UULLL LLR [go open the chests]

Save more barrels for later
DDDRR RRRRR LLRRR ULLRR RLURR UULUU UUUUL [checkpoint]
(for some reason, this doesn't work every time; try it and press C until it does) RRRRR RRRRR RRRRD RRDDU RULLD RUDUU RDDR [checkpoint]
RRLUU DDULR LUURD URDDU UDDDR [checkpoint]
RRRRL RLLRR RLLLR LLLLL LLURR RRRRR RRDRR UU [go open both chests]

Find the right moves!
DLLLL LLLRL URRLR LLUUR UDDUU R [go around and open all chests, avoiding the spikes]

Back and forth!
LLLLU DRRRR RRURU RUURR RRRLR RRDD [checkpoint]
DDUUU ULULL LLLLL [checkpoint]
DDLDL LLLLL DDDLR LRRRL LLLLL D [go open both chests]

Witch house chests
DLLUL UUUUD RRLRR DRRDU ULLUU LLULU LULLL LLD [checkpoint]
URRDD DDDDL RLRDD DLRLR DDLRD DDDDD DDLR

Be smart with spikes - good chance to continue!
RUDLU RUDUD RDUDU LUUUU RRUUL DDLLL L [checkpoint]
LLDDD LLLLU DUDLL UDLLU DLLUD UDLLU DLUDL LUDLU DLLUD LULLL LDDDL LL [checkpoint]
RRURR LURDL DDLLL LDULU UULUD RDUDU LUUUU R [checkpoint]
UDLDU UDDDD DRLRR URLLU UU [go open last two chests]

Do not pierce yourself with spikes!
RLRUU URRDD RRRRL UULRR LDDRR LRDDD DDRUU RULLD D [checkpoint]
UULLU UULLU DUDDD LRLRD DRDDR UULUU LLRLD DLDDR LLLUU LUULU URULRL RLLUU [checkpoint]
DLLDL LUURL LDUDU LLLD [checkpoint]

At this point in the stage, there is unfortunately quick a bit of variability in the snakes in that little area. This first solution before is the one that worked for me most often on the Win 10 version.
UDDLD DLDRU ULRLD DDDDD UUURU ULLRR LRRRD LRDDL [checkpoint]

This solution is an alternate one:
UDUDU DUDDL DDDDU LDDDD DDUUU DUDUR UULLR RLRRR DLRDD L [checkpoint]

Here is a third option:
UDDLD DDDUL DDDDD DRLRL UUUUU LRRLL RRRRD LRDDL [checkpoint]

Regardless of which solution works for you, picking up from the final checkpoint will always be the same:
RDDRR RUDDR DULUU RLLLD DRDRR

here is a guide for the level RUIN: BACK AND FORTH!
After the patch! here is the youtube link to my guide for the level.


thanks i hope it helped all who got stuck.