Get To Top Of Tower In Relic:

This trick requires an overshield, a rocket launcher, and preferably a Warthog. Use the Warthog to push the small barrier by the shoreline up the left ramp next to the tower. Align the small barrier parallel with the tower at the top of the ramp. Then, stand on the bar sticking out from the small barrier and shoot the top of the small barrier. It will shoot you up to the top of the tower. Make sure to move closer to the tower as you are flying up. Note: This may require several attempts.

This trick requires an oversheild, a rocket launcher, and sword. Go to where the Warthog respawns (near the Pelican), then go to one of the shield-type things and get behind it. Start hitting it with your sword to the Relic point (straight ahead). This may take awhile, but it is worth it. When you get there and have the shield facing it, make sure it is slightly back up away from it. Stand on the support to the shield and use your rocket launcher on the top of it. You will begin to launch very high. When you start to launch, press Forward. This may require a few attempts. When you make it up there, you will be able to see all your opponents and you will be in lock-on range for any vehicle.