Advice:
In the House:

December 3: Unlocking the birthday cake.
September 1-4: If you trap the whole house, the cat is more likely to appear.

In the underground:
There is a pass for the train and panties in the lockers.
There are 4 girls, one per season, these speak backwards. (As a precaution, I took a picture of them)

Others:
Clicked on as many monsters as possible. (take pictures of them)
As you progress through the game, if you wait on the couch in the basement, plaques will be revealed.
And if you wait on the small platform not far from the sofa, a platform will eventually rise.

In the underground:
The dildo is found in the underground.
A hospital bed
2 billboards
a column
2 machines that look like the washing machine.
1 teleporter
1 shortcut for the underground.

After talking to all the girls in the basement, a panel will be cut out. This will unlock a green tube accessible from the shortcut by going straight. This tube allows you to travel 2 to 3 months in the future.

Back in time:
As you may have realized one of the zip files contains an image with a date and time for 1983 but if you are using a current operating system you would be in trouble.
The best advice I can give you is to create a virtual machine with Windows XP on it. But more recently I found this. (Whether that really works remains to be seen.)
https://www.nirsoft.net/utils/run_as_date.html

https://note.com/aho_kukyou/n/n5e85ebc8db5b#sVhrY

Do not hesitate to resell the duplicates and use the points for upgrades.
The best weapon is the scythe.

Edit: Katana (you can up lvl than 10)

Arrived at level 50 there are 2 possibilities either you lean on the green tube. And you start again normally. Either you leave the scene voluntarily and switch the game to phase 2 mode with deeper exploration (infinite lvl)

The end of the game will come when you find your sister. (Tip: Alternate between 50/50/100 method)
End: https://u.smutty.horse/mfonlcoanxa.mp4 (Potential alternative end)
(Your basic stats lvl up everytime you touch the green tube.)

To all those who have played .H² [Live] as you know the game is a bit special.

Basic games are updated by creating a new build, but not here. Here the developer has voluntarily created extensions for the game. Extensions, which are protected by passwords, which must be unlocked as the game progresses.

But strangely the more you advance in the game, the more enigmatic it becomes. Discovery of the basement, discovery of spirit, meeting of seasonal girls. By dint of unlocking the Zips have made returns in time.
Then, by force, my curiosity is asked the question do I arrive at the end of the game?

Logic would say yes. But...

You should know that the basic game offers 11 passwords.
7 ZIP files are provided with the base game. Including 6 thanks to the patch provided on the official site. (Some Zip uses identical passwords)

But when I looked in the game data it turns out that there is a ZIP hidden under the name of Re.Alice.
I looked at my Zip folder nothing to do there, it is not there.
And the dev did not put a download link.

I figured there had to be something to do. Search the site to see if there are any clues.

Only, on the site there is a little flash game, called XIV, which is actually a shoot'em up. At least, at first glance. Because indeed the shoot'em up also contains a lot of secrets, and in particular information about Re.Alice.
hxxps://cdn.discordapp.com/attachments/895039018650189904/940636218260095056/unknown.png

By exploring the game data. (Xiv.swf) I also noticed that there are 2 codes.
hxxps://cdn.discordapp.com/attachments/640755766864904202/940633826219143188/unknown.png
Codes that must be inserted somewhere, except I did not notice any code location, neither on the game nor on the site.
And continuing to explore the data I noticed that Xiv.swf redirected to c4.swf which also redirected to bll.swf.
And in the latter I saw that it was referring to .H² [Live]
hxxps://cdn.discordapp.com/attachments/895039018650189904/940637037420216350/unknown.png

I tried looking for potential URLs but alas I couldn't find anything else.

Regarding XIV there are several branches and multiple variables.
Example:
It is explained to play it at least 10 days. But to be exact it's more like playing it 10x.
But OK...
You should know that this shoot'em up also reacts to non-violence.
If you don't attack for 3 turns it will reveal a secret.

If you shoot in the first round and you don't shoot again until level 6 there will be a cone and an invisible element. If you press on the invisible element, you go into a strange sequence.

In this sequence (where there are black triangles) you have 2 options, either you shoot everything then you end up seeing men, then you use a bomb and you fight against a red opponent.
Either you use a bomb on the black triangles and you get attacked by the triangles.

For my part at the 14th opening of the game I had the colors reversed.

But the games still hold a lot of secrets. I noticed that a Japanese had noticed a morse code. Something I haven't noticed personally.

In any case, I'm at a point where I don't know where I'm headed. This search for the missing Zip is a treasure hunt that has taken me a long time so far.

Hope this can help some of you.

Edit: Having finished .H² [Live] at 100%, I still have a lot of things to discover. And not only in this game, I noticed a lot of hidden things and in particular codes and passwords. I spoil them for you below.


At the moment I can't find any way how to use the code and pass.