Best I can do is 1:30. Jumping away from walls feels a little awkward, I think running up diagonal walls should give you more air but I couldn't do it reliably, I did this maybe two times on accident? Running down slopes feels right, reminded me SpeedRunners a little. As I said, got to 1:30 and was sure to unlock next level as it was 1:45, right? Nope! It's 0:45!
Weapons are all right, rocket launcher is a mofo, magnum bouncing off of walls is great, I'd have to practice more with shotgun.
Overall not a bad start but again, don't drop the hardest challenges in the first level. Give me three levels with enemies to kill and occasional technical jump to make with a secret exit than can be accessed with fancier techniques. Let the player learn on his own.