While under the restriction, make your way to the Stellar Fulcrum at the top of the tower.
Goblins and Gigas aggro sight only, Bats and Ghosts will aggro sound, Dolls and Pots will aggro magic.
Along the way you will encounter a Seed Afterglow on each floor. Checking it while under the Level 30 restriction will give you a certain key item stone.
When moving between areas (lower, middle, and upper; or the use of tractor), your level restriction effect will be removed. You must re-apply the effect by examining the Seed Fragment near the teleporter in order to receive stones from the afterglows.
While under the level restriction, you will not lose experience points from K.O., nor will you lose any of the stones already acquired.
While you will not lose EXP, you will also not be able to receive EXP from battles while under the effect.
You will regain the level restriction effect after raising.
The effect of Tractor will cause you to lose Level Capped Status.
Can be solo'd with with any job that has snk/visi @ lvl30. Wait til mobs turn, examine seed, invisible up again. Be careful if there are monsters that aggro by magic around, such as elementals and dolls.
Leaving Delkfutt's Tower before completing the quest will not remove the key items and you may start again from where you left off!