Auryn quest is a first person platformer, there is a demo on File Planet. Also the info at Moby Games: http://www.mobygames.com/game/auryn-quest
You cant shoot anything, but it does have a crosshair. It didnt like my modern PC, so I installed it on my 4 year old one. Its a gloomy game with some good lighting. It reminds me of the unreleased game Seed, which was also a first person platform game.