It's not too bad if you know where the keys are before and where they are after the dungeon shifts. The maps and possible locations are on the wiki.
The longer you spend searching, the more and more annoying this level becomes.
As someone who played the original Rogue, and so many other MDOS-era rpgs that required you to actively make your own maps and take notes with a pen, this is MERCIFUL.
That doesn't change the fact that you did need to. Besides, this map is so easy I did it first time :/
Same law as always in RPGs, explore every nook and cranny, find keys, get out.
