Hyperdimension Neptunia Re;Birth1 - Getting the 100 million credit achievement? (DLCs required?)

TL;DR: Trying to get the 100 credits achievement in HDN R;B1. Should I buy DLCs.

Yeah it will make the grind easier as it also unlocks new coliseum battles

Some of the last coliseum battles (lvl600+ iirc) rewards you with 1 million+ credits so you'll need all 3 additional content DLC (or only 2/3? not sure if you can do that). The characters DLC are nice when you're starting but unless you like one specifically they're easily replaceable at higher levels.
I bought all DLC before starting but I don't feel like they brought something important to the game except the easier achievements (and easier game with the items and OP weapons and strong starting characters)

There's something hidden in this message, jk haha.

Hum, I bought all the DLC's before I started the game, so I don't know exactly what's in each of the dlcs.

Anyway, since I just did that achievement a couple of days ago, I just post how I would do it, if I had to do it again:

1. Get this free DLC, build the colosseum and get the best weapon for Nep through a quest that pops up. You'll need decent (~50) electric resistance on your groupleader to do it, but you can purchase a good ring for that.
   1-b. Also buy one "level cap"-DLC. Not sure if you really need another one.
2. Unlock all the relevant Clione Dungeons (Millenium Labryinth -> Yukawa Ruins -> Zeca Ruins No.2). You'll receive the ML plan from the world map and should find new dungeon-plans in each subsequent dungeon that you unlock. You'll need to do this in chapter 5 since you can't get the additional enemy plans after that and you'll need those in order to spawn Clione.
3. Get the "credits up"-plan from MS Mountain: Second Area (hidden treasure) and "exp up" from the Lowee Snowfield (hidden treasure) and build them.
4. Equip a "more credits"-disc on each of your three main combatants. At the end of a fight one of those 3 will randomly apply its "more-credits" bonus.
5. Farm clione in Millenium; then Yukawa; then Zeca, so you get exp and credits. Note that stronger Cliones just give more exp, but not more credits. Well, this probably takes a while, now.
6. Take a look at the arena fights in the colosseum. There should be some missions against mobs with a suggested-level around 400-500. So Just try if you can beat them once you get close to that level range. These give finally more credits than Clione-farming. I think for the last 20m credits I just did the "Super Iron Knights" mission.
7. When you have more than 50m, just make a save and buy, sell, re-buy stuff until the achievement pops. The achievement doesn't say that you have to own 100m at the same time - just earn it. It's not your fault that you are bad at trading!

You can alternate this a bit by targeting towards these colosseum fights and thus focussing more on getting experience.
While Clione is still a very good exp-source, you can find an even better enemy (Legacy MK-2) in the Yukawa ruins who yields ~150% of Cliones exp. So you could alternate between fighting Clione and MK until you reach the needed level for those colosseum fights. To spawn this enemy, however, you'll need the related "Add Super Enemies"-plan, which you get from the mentioned level-cap-dlc.
I think in order to build it you'll just need an item that is coincidentally dropped by Yukawas Clione, though it could also be possible that you can't build it without items from the other DLC-dungeons! (Not sure right now ;D)

It helps if you have the true-ending armor and an item for every combatant that removes the "damage cap" of your attacks. Also having the (second-)best weapons for your other combatants would be helpful. You can get those through colosseum-fights, that can be done between level 100-150.
If you need it at any point, you could also get the "Treasure Hunter"-plan from the Gravidaze Ruins, which increases the item droprate.

So, basically when you are at the point when you are able beat other enemies than Clione, you'll have nearly reached your goal - though having one of the level-cap DLCs speeds things up in any case, since fighting clione becomes easier, too.
However, with the fairy-fencer sword and removed "damage cap", Nep can one-shot the "Millenium"-Clione. So jeah, it's not that much faster with paid DLC's, but more interesting :P

IIRC I pretty much farm that free Fairy Fencer DLC Colosseum battle for both levels and money. Enemy uses lightning, you can get 100% lightning resist easy.

EDIT: But yes, get those DLCs, especially if it's on sale. It adds a lot of end-game stuff that's hella fun. But I still did farm my stuff via the free DLC, lol.

I hate achievements on crappy DLCs

I did it without the DLC, but it did take a really long time. I read somewhere that the time it takes for you to grind to the new max level with the DLC + farming the money monster @ level 300 takes relatively the same amount of time as only farming the money monster @ level 99.

But yeah, I just changed the window resolution to be really tiny and killed the same monster over and over again for like 20 hours...
Having a TV show or a movie to watch on the side really helps.

Just getting close to this (yeah, finally started playing this game!)
I saw there's a guide for hardest achievements, did you check it?

Hello, two year old thread time to wake up. I see you got all the achievements of this game. And i am in same boat. Care to share your experience on what dlc are worth buying for this achievement. I haven't started the game yet.

Ask for touhou gib jb hahaxDd

How many hours did it take?