To many forced logic and author make some action seems really easy (ex: early part when mc tried to get supplies). interaction between character that bring into the plot seem logically error, the bridge between them no smoth and seems forced too. the last, fighting scane and the reason behind them is really bad.

The premise of this story is to show mc power is absolute. Well, you can say the author successfuly deliver this premise. But, the scheme of others character seem bland and meaningless because you already know how the enemy/fight will end.

At the later part.... It regressed so much and become boring. So many unnecessary information and you can skip it without loss much important information. Also, the power scaling and power systems is all over the place. If lvl 20 (if the MTL not wrong) is peak humanity before become immortal, but at lvl 5-8 you already running around the world within day. Than what come after that? (This is only one example) The pacing is really slow, for me, it's unsuitable for apocalypse + regressing theme. It's like your average japanese Isekai slice of life but the worst version.

Decline after mc get his cultivation back.

Decline at 200++ chapter. Finally rushed ending.

the earlier chapter is good, but at later on...... decline. I very much agree with @ghostlybusiness review.

Boring. Already read so many similar story with same concept (raft survival), this is just bellow average. I already know this is just apocalypse + wish fulfilment type story when he gets water purifier in the first day of his survival. I bet, later part mc will get other essential item easily too.

The plot running around the mc, mc feels so perfect to the point unreasonable. Usually, I don't really bother when plot running around the mc. But with this novel have high political aspect in this story, other people seems like retard, all the scheme they are building easily ruined. For romance aspect, at the beginning of story, this aspect is really interesting. Mc and FMC building their relationship in reasonsable way, accumulated slow but surely. But at the later part, other FMC easily captured with 'mc aura', which I find pretty boring for romance logic.