In order to turn the power on for the Glow, the Vault Dweller will need to make his way down through the levels, picking up the key access cards along the way. Once at level 6 he/she can repair the generator (requires high Repair skill level) and then restart the power for the Glow. Failed attempts to fix the power generator will cause significant amounts of game time to pass. This can be extremely dangerous in the Glow, as after 24 hours of exposure the Vault Dweller may reach a lethal level of radiation.
Access to Level 5 of the complex grants the Vault Dweller the option of snagging the plasma rifle. An additional 1000 XP are granted once the Vault Dweller arrives at Level 5.