Uh oh, so many replies in so short time... But let's start:
BH4: Hmm, I hope you have enough keycards so that you can follow these instructions: Find your way to the southern part of B1 floor. Then start going east and you should come to a block puzzle room. When you reach the southeast corner of B1 floor, don't go up the stairs if you have been there already, but instead go one screen to north, then west and then north again. You see a shutter and some unreachable enemies. Well, just kill all the enemies and the shutter opens. Go north and you start seeing locked doors. There will be 4 locked doors and 1 keycard ahead, so if you have 3 keycards, you can reach the mini boss room now.
Jish: I can say you're doing pretty well. The average of deaths after the 2 first levels has been about 20, and the time somewhere around 6 hours.
To help you, well Polygon already mentioned the sewer access. To be more specific, you have to enter the sewer access that is in the northwest corner of Mega City (south from the Lab). Go through the sewers and when you're back in the harbor, just go east and you'll end up in the next level which is the big cruiser m/s Mariel.
And what you said about the Secret Facility, there's nothing wrong to praise a level if you honestly think that it is so good. And there also isn't anything wrong in disliking a level if you honestly think it's a bad one. But how I did the "custom enemies" at the Facility? Well, you got most of it right: Enemies behind a layer... and some more things. It sounds easy but it is really complicated. If you forget even one thing, the custom enemies don't work properly.
James: Well, MMDWR is a very different and unique quest, so I don't blame you if the quest feels akward to you. But obviously it's akward to you in a bad way when usually to other people it is akward in a good way.

But if these kind of quests aren't your cup of tea, I don't complain. Instead, I appreciate it a lot that you're still playing the quest, and if you some day can finish it, I hope your opinion will change.
But to help you, the Lv2 Light Saber is in a secret mini level near the second dome. Just follow the road through the overworld and before the broken bridge in the west, go north and you see a warp portal thingy. It takes you to the mini level.
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PolygonX8
I seriously can't understand how people can hate this quest, truthfully. Tons of effort and creativity was put into it, so it's hard to believe this quest could recieve anything lower than a 4.
Tell that to people who rate quests at the AGN QDB...

Well, as you figured it out, people who hate me rate the quest badly. I know I was an overexcited jerk in the past, but can you really blame me after working so hard on the quest... :\
Anyways, usually when people hate the quest, they actually hate me. And I really hate that kind of crap. If we could rate members here, I wouldn't care at all if I had a 0-rating, or an asshole rating, but to hate my work (and it's not just my work) just because of me is lame and dumb.
As I've said, I accpet all kinds of negative feedback and I don't mind if people give low rating if they don't like the quest, but to give a really poor rating... I just can't believe anyone can honestly think so...