Hey guys, I wonder if you've ever heard about this game. I've stumbled upon it a while ago when browsing
this site.
Hades 2 has been developed by a Brazilian company called
Espaco Informatica, and it was released somewhere around 1999-2000. In 2009, the developers have released it for free to celebrate the 10th anniversary of the game.
Essentially, it's a 2.5D FPS with high-res sprites, digitized actors (dev team members actually

) and a sci-fi/horror theme, and a very dynamic interactive world. Also, it has reminded me of the
Marathon games a bit. The game was obviously quite dated already when it was released, so it is no wonder it had gone largely unnoticed (although it is said to have been quite popular in its home country). However, it has an excellent retro look to it, and it has an overall good, quality design.
Hades 2 Wikipedia article
Hades 2 gameplay video at YouTube
Hades 2 official site
Hades 2 screenshots
Hades 2 official full download
Download Hades 2 Demo
Download Hades 2 Demo video add-on