How much time is required to beat the game?

[SoulSteppe]

well, I mean, the entire game and possibly 100% achievements? all 6 in this collection?

[Lucaman]

kh1 took me around 60+ hours i waste time on clocktowers.

kh re com both characters around 20 hour just under 40hours but i took a few week to clear riku lvl 99.

edit you need to watch 358/2 first in order to get card in re com.

the rest didnt play it yet.

[Abstract]

all of these are assuming you're playing the highest difficulty in each game (final mix: proud in kh1, proud in re:com, critical for the rest) because there's achievements attached to doing that

kh1 takes probably 50-60 hrs to 100%

re:com is probably around 50 for both stories 100% (though i'm less familiar with it so don't quote me on that)

kh2 is roughly 60-70 hrs to 100%

khbbs is the hardest one to 100% because you're essentially doing 3 separate playthroughs of the game + 2 extra episodes. i'd estimate around 80-100 hrs. just keep an eye on the trinity archives to keep track of what you need to do.

358/2 and re:coded are both movies (358 is about 2 1/2 to 3 hours long, no idea how long re:coded is) so....just watch em to 100% them lol

[Luna ~]

i was able to do KH1 in like 25-30 hours and recom in about the same, KH2 took a bit mostly because i wanted to enjoy the game I gave up on BBS in general though cause i was reminded how much i just do not enjoy that game.
I went to check the save files
KH1 31 Hours
KH re:com 15+12 (27 hours)
KH2 39 hours

[mussa]

For 100% of the achievements:

KH1 Should take about 50-60 hours to complete 100%, stretching a bit longer if you watch every cutscene and read every dialogue.
For the 100% achievement i recommend doing 2 playthroughs for these achievements: Complete the story in under 15 hours + Finish the game without using a continue + finish the game without changing equipment; All three easily achievable in Begginer mode)
For the rest of the achievements and grinding just do Proud mode;
They polished A LOT of the achievemtns for this title since the PS3 release 10 or so years ago, which was a nightmare. Now you have one less achievement to worry about and the gummi ship missions was cut down to only having to do one mission of each difficulty instead of all missions;

For KH2 between 45-60 hours. Including cutscenes. Going for critical mode should be a little dificult on first try but I recommend it for the experience. Grinding is simple and easy and shouldnt get in the way that much.;

KH bbs should also be simple. Story clocks between 15 to 30 hours for all three characters combined, watching cutscenes. You DO NOT need to grind all three characters. Each character has their own set of achievements (aqua having the majority of them believe) but aside from that shouldn't be too dificult to achieve.;

KH RE COM being the grindiest of them all. IT REQUIRES YOU to watch 358/2 days in order to unlock certain cards which the game demands in order to give you the achievements. You are going to have to finish the game story, go back and grind specific cards to open specific doors to get an specific cards about twice each world. THEN you have to grind for each drop of each cards and manipulate certain aspects of each room to have those cards drop. It's definetly going to be the most time consuming of them all.;
I'd say you could finish in 30h to 40h or you could finish in 70h to 80h. It really depends on your RNG and strategy.

Hope this helps.

[Ember]

General tip for this: Look up a site called How Long To Beat, should give you general idea. (That being said playthroughs can vary greatly between two players.)