only reason i brought up the rad ghoul is, needing to destroy high hp blocks just to complete a quest sucked. especily since i only got a iron pick. i remember the intention behind the rad ghoul, tho im glad your going with a steadily ramping damage type, as apposed to, hes just spawned and your in the middle of the POI, guess you die. X3 tho the idea of rad blocks i greatly appreciate! such as radation barrels and the like. :3 as well as a new quest type, again, always neat when more is added this way.
so... the way your POI is pathed, is that you start in the offices, then you head into the flooded basement, then come out the other side to the other group of bandits. wipe them out, then make your way to the kitchin but... i aint seen a clear path from there. so you return to the lobby with the big locked door, but theres no way to open it.... from this side.
you gota head back to the offices, find the one door there thats locked, break it down, and then go that way to unlock the Lobby door from the other side. the flow of the POI is a little whacky, is what im trying to say. XD