It is not commercial, and the original author (now missing) is delighted. In fact, he still maintains its website, but out of date and with some broken links. This version works fine, and I think it has no problem with that tree. Anyway if it happens to someone else, I can look at it, but I passed that area at the first time.
https://drive.google.com/file/d/1CRKta_Keb_Eve2zrJZRCbTCXxNGIsSnD/view?usp=sharing
I have a general request. If anyone still has the game manual, which was linked here, and it is broken for years ( http://sergiokrauser3.blogspot.com/2013/09/eternal-champions-ttsof-interactive.html#comment-form ), I'd really appreciate sharing it. It show how to do the fatalities, and I haven't figured out how to do them yet.