Really quality old school FPS - you've got the tone perfect. Loved the lighning fast pace, and the inclusion of secrets was a great touch.
The environments look great, and the sound design is wonderfully 90s.
Would love to have a mouse sensitivity slider, as with my setup it could have done with being a touch less sensitive, but still managed to make it through. It'd also be great to get a Doom-style hud to really complete the look :)
Great game, was a blast to play