Before first playthrough I have read this thread about Candidates, found how to get them (and in that guide was a tip about true end), learned that you get 3,3k MB per walkthrough, So I, basically, rushed events without unlocking any plans until chapter 8, where I got candidates. Farmed a bit to get resurrection items from quests and shares. (there is my early screen, first playthrough, all 3 candidates, less than 30 hours total)
Second playthrough - rushed all events to get normal ending (for album). Because I already was capable to end the game, this took 1 hour or less with permaskip of plot with "space".
Third - carefully unlocking dungeons as soon as i got plans.

The only guide used - drop.
http://www.gamefaqs.com/vita/708361-hyperdimension-neptunia-rebirth1/faqs/70360

Now that's quite intriguening... So it's more about items that about leveling? It's sure... disappoiting, in a way, that the very max. level doesn't give you that much. :D

Not that's more like it. :D But... item/skill jammers? O.o Can you explain?

Although I paused my gameplay to finish Deus Ex: Human Revolution DC (and somehow failed to get Pacifist... now I really want to kill people there), but I would, probably, spend more time on singleplaythrough, because I tend to enjoy everything I can. :D So... going for items, dungeons, plans... and grinding just to get that 'round level'. I would probably end trying to get whole mosterpedia in the game as well.

Probably stronger - My char has almost 10k strength, 3k is given by best sword. so, level 999 is a double of best gear.
Button-like mobs, which while alive block usage of items/skills

It's not entirely correct. Max level Characters have their Int/Str at 5000 or 6000 something while the best weapons give about 3000 something damage. So level is also pretty important. Especially for HP

There are some enemies that make you unable to use items or skills while they live. And they got crazy phys def and are immune against the "Ignore Enemy Traits" skill. Without magic damage you won't be able to outdamage their auto reg. And even then it'll probably the longest fight in the game. You'll also need a Gradual HP recovery chip(famous artist) or The Drill Chip or you'll die because you don't have any way to heal your team.

You only get 3.25GB per Playthrough, so if you want all major plans(Candidates, Colliseum, Laplace eye, Super Exe Drive, Break Damage Limit, Max eq, etc...) you'll need at least 3 anyways. And some add enemies plans can only be obtained by unlocking a dungeon and then being back in chapter 2 and reading chirper events.

That's better... although this 'best gear' is probably god level, so maybe I want too much. :) Still - thanks for explaining. :D

Well... that's the plan. I already knew, thanks to these thread, that I won't get everything in one playthrough, so I don't mind. And... to be honest - I will worry about going for perfection in latter go's, and focus on goofing around this time. :D

The only other place they appear is the colliseum, where they are far stronger. Most of them can be outleveled/overequipped, but the ones for Plutias and Peashys ultimate weapons are for lv999 and can't.

Here is a perfect Savegame with True Ending, one Dungeon before Finale.
All CHARs (about Level 600), all Weapons, Items, Dungeons, Plans, etc....
Just rename the File from .jpg to .zip