According to this post:
www.ryonani (dot) com/hentai-ryona-adult-games/991-xenophobia.html#post4791
the original source is from here with pass RYONA:
u3.getuploader (dot) com/ryona2/index/5/date/desc
It's the file called Xeno-0.22.zip
If I recall correctly, there's also a hacked save file you can use on that site or maybe the thread. I didn't need to install Japanese language stuff or set locale to get it to run, though the text was mangled.
The game isn't finished and is very short, and thus there aren't many death scenes. Traps aren't instant death now, but they still have unique death scenes. Also, most or all of the enemies have unique death animations now. There's also a pretty well hidden death scene dealing with a phallic shadow on the wall. There is a way to get the character's clothes off by getting hit by the downward slash of the first boss a lot, but as far as I could tell, you have to use a hacked save to get enough health potions to actually survive enough hits to get nekkid.
There are two puzzles which are obtuse, at least for non-Japanese-readers. One concerns three colored orbs which must be placed in a certain order. Another concerns a set of switches in a room which must be set to a certain pattern to progress. The orb solution is set, but the switch solution is different on every game. Speculation has suggested the solution is the binary representation of the number of health items (and stamina items?) you have when you enter that room/read the puzzle description/who knows.