Hi!
I haven't made a walkthrough but here's one~
Monday - Choice doesn't matter
Tuesday - Order doesn't matter
Wednesday -
Go Out
(If Andino route) Boxing and Sidestep, (if Giacomo route) Casino and Raise
Try to find a side entrance
Thursday -
Stop her
Order doesn't matter
Friday -
(If Andino route) Casino
(If Giacomo route) Bar
--Routes diverge at this point--
Andino route - look for gun in corpse
Giacomo route - stay silent
Hopefully that helps! Let me know if you're still having troubles.