I thought it was a bit disappointing. LiS has been one of my favorite games in recent years, but ep5 was lacking compared to ep4.

Seems like everything got too complicated all of a sudden and it was very disconnected from everything that happened in previous episodes. The motivations of the killer were also pretty ridiculous.

I've noticed this is often a problem in game story writing. Sometimes game stories start out simple and effective, then all of a sudden you end up in an alternate universe and everyone's going insane and the floor is building up under your feet and there's weird magic stuff and echo-y voices everywhere. I hate when this happens. It's better to keep a well-written emotional ending than to try to impress with a weird "mindf*ck" ending that spins out of control. TWD2's kenny endings are a great example of how to do it right