So, I have version 0.9.9 and it is in english. I try to dig out the site where i got it from. Too bad I haven't saved this site i stumbled upon by accident.
As far as I can see you need Java (minimum v1.3 - I have newest on my machine) installed on your machine. I can run the game without problems.
If all else fails, I can sent you 0.9.9 via email
This is the readme accompanying the game:
LOSTHERO
------------------------------
1. About
---------------------
LOSTHERO is a freeware DungeonMaster-like game system. It is being
developed because I love dungeon games and I don't think that actual
trends on the market can cover my needs. I don't see the purpose of the
game in the graphical environment, but rather in the game itself.
2. License
---------------------
This game is distributed under Public Domain license. And of course we
don't give you any warranty
3. Start game
---------------------
To run this game you must have Java 1.3 or higher installed. You can
download it from
http://java.sun.com. The game is running on Windows
and Linux and this is main reason why we use Java. If you don't know
anything about Java just download JRE (Java Runtime Environment), which
is exactly what you need.
Under Windows you can use the LostHero.exe to run the game. This program
will search for Java on your computer, set up a few parameters and start
it up.
On Linux you must run the game manually. Use this command:
java -jar dd2.jar
Optionally you can use some parameters on the command line:
NOSOUND - need we say more?

FULLSCREEN - this mode has been disabled, because Java 1.3 is unable to
recover the original video mode after the game terminates. JDK1.4 can do
that but now we are developing back on 1.3, which provides compatibility
with most of installed Java VM's.
4. Game system
---------------------
Game system is of our own design, but it was strongly influenced by
Wizardry VII.
Races:
We currently have only five races:
Humans - masters of balance
Elves - intelligent
Dwarf - vitality
Hobbits - skillful
Giants - strong
Pixies - weak, but good spell casters.
Professions:
In the beginning there are only 4 professions to choose from: Fighter, Rogue,
Mage and Priest. But how the LostHero will continue his journey is entirely
up to you. Every person can become a member of some clan and at various
places they can upgrade their profession, but only in their professional
area. For example a priest can become crusader, druid, monk, etc.
Spells:
We have our own spell system based on the following 6 elements: Stone, Water,
Wind and Flame are controlled by intelligence and their source is in nature
(Primary mage). Being and Void are coming from gods and is controlled by
spiritualism of being (Primary priests). Every spell is created from one
or more elements and depending on how the professions are upgraded there
will be different combinations of elements for special spells.
5. What we have
---------------------
Current state of game is "mostly finished game engine". Now we are creating
first games under it, where this one is representing them.
6. Recruitment

---------------------
This game is for you to play but also, you could create your own games
if you want. Download the editor and documentation and you can start
creating your own game. You can receive support from us and also in the
levels there are lots of tricks, which you can use in your own game.
7. Team
---------------------
Hideoshi - ideas, development
Oldrich Dlouhy - Main tester, Spell developer
Kamil Tatar - Monsters Pictures
Kriss Wells - Art of faces
Coriman - Walls textures, music
Karel Kohout - testing
Marinho Tan - Testing of editor, Linux testing
Alexander Enchevich - Text corrections
Thanks to David W. Bradley for creating Wizardry!
8. Bugs & comments
---------------------
If you found any bug please report it to
bug@losthero.com. Or you can
report it on
http://sourceforge.net/projects/losthero/. This is our main
developing site and you can get all updated packages here.
Enjoy it.
Hideoshi
---------------------------
LOSTHERO (c) 2001-2003
http://www.losthero.com
http://losthero.hide.cz