This one... is difficult for me.  Overall, I didn't think it was too bad for a Gary Stu, everyone who matters is fine infinite flow novel but on the other hand... there are some things that just really annoyed me.
For one, the driving point of the story in both the blurb and the title, which is to say the looting equipment bit?  Not really prevalent in the story and will become a completely moot point once one of their team member's finally figures out his spirit weapon.  Then it's simply a buy buy buy story.  The initial worlds were somewhat interesting and I can't even begin to tell you how much of a breath of fresh air it was that not every female character you meet is either a) a useless weak character or b) trying to get with one of the main characters.  Not that at least one example of these didn't appear, but they didn't comprise the entire female population of the story.   That being said they were all sidelined.  Every single last one.  The only one they actually invited to join their team, refused and completely disappeared out of the story. 
Anyway the entire main team of the story, which ends up being 6 people by the end, are all male and they will be all paired off by the end of the novel.
The ending itself was super rushed.  You were literally in some random world up until chapter 99 of the story's 102 chapters.  That's 3 chapters to wrap up the infinite flow world bits, get out, and find each other again. 

Also there were some super hand wavy bits there at the end when the final attack team, comprising of literally every intermediate traveler and higher, didn't succeed against the final boss and when the MC gets back to the real world, he's just like "oh they're all fine and they left, they just don't remember everything like me" for literally NO REASON that I could tell.  Nothing in the plot up to that point suggested that this was even a semi-accurate conclusion to draw.  I thought they were dead until he whipped out this line and I was pissed about it.  Also, there never seemed to be any real purpose to the infinite flow world.  It wasn't doing anything.  Not for itself and not really for them, other than giving them a bunch of useless skills they weren't going to need in the real world and some bizarre attempt at a "well they're mentally stronger" explanation that still leaves you wondering why the fuck they needed to be?  They weren't having any issues to begin with.  It was annoying to say the least that there wasn't even a real explanation for why they were all put through what they had to deal with.

tl;dr - it had some potential to at least be a run of the mill OP infinite-flow novel but ultimately squandered it on a super rushed and pointless ending.  I didn't hate it but it was a bitter final taste that soured the whole experience.