download these 2 demos and watch...To view these demos you will need to either:
1. Visit the FGS server and play the map "DXSG_Orbital_TNAG"
OR
2. Download the map from gravity-world.com and download latest version of tnag. You will also need to have downloaded the first two stargate maps"Stargate Maps".
Grav.dem
This shows how to climb from the Landing Bay to the planet surface, without using ring transporters.
Basically run and shoot the floor in front of you, then as your jump ends find the tunnel wall,
as you begin to fall, shoot the tunnel wall in same way you shot the floor... hey presto! you are superman.
Grav2.dem
This shows how to fall into the tunnel with a neutron bomb, drop the nuke on the Landing Bay,
then climb back up to the planet surface.
Although you can SuperRocket the landing bay from the planet surface, you can not drop nukes,
the tunnel is so long that the nuke explodes about half-way, so u need to jump into the tunnel,
drop from about half-way and climb back.
Predatorbug.dem
CENSORED!!! Too much info!!! And guys don't mention what else a grav rifle can do, then ppl wont be trying to do that...

These Demos were made by [FGS]Shadowrunner on the [FGS]Wunderland Server.
PS... that tunnel is long, make sure you have enough grav rifle ammo... rofl...
EDIT: although a superrocket descending 30,000 unreal units and showering green phosphorous all over a millenium falcon is one of the most beautiful things you will ever see, it takes 25 seconds to arrive, which means enemy team have at least enough time to teleport out to space...