Flight mode

Sup I want to fly during a fight. Can I turn on flight mode? This mode was in the "Doom" game. 

There's a few forms of flight in the game actually! The easiest one to play around with would be the jet pack, which you can enable with g_jetpack 1
Or if you're feeling really adventurous, there's sv_cheats 1 which will let players use the fly command in the console.

Possibly. But I do not know how to turn on the absolute flight mode. The same mode as before pressing the space bar.Thank you!