Noclip

Noclip, also known as fly and ghost, is a cheat that disables the effect of gravity and the effect of world solids on you. This allows you to glide freely through the world. Although this is a good way of drawing nav_ meshes, if you are playing on a server then as you may notice your crosshairs are as far out as they can go. You will not be able to shoot as well, so hence you will have to go closely to your target and then shoot. You cannot get die. Entity's such as point_hurt will not effect you.