This is a level for giants. Everything is huge, in all directions. But the giants aren't home, so it's you with the undead warrior mice. Like in "Jack and the Beanstalk", the theme is clouds or more precisely flying: there are very many wings of wrath, which you'll actually need, because sometimes you may get stuck in some balcony with no way out. Start over if you run out of wings or chaos devices and you're stuck.
For the most part I could not find weapons, so I heroically tysoned my way with the elvenwand, gauntlets and staff (yes, that's useful too even if you have the gauntlets). However, it turned out that a weapon is available near the start.
I couldn't find the exit so I gave up. It turned out it exists, but its access door is activated by a switch kilometers away.
Due to all this, the level is rather boring and annoying to play. It may be a deathmatch level for ants.
This level is pretty high quality, with good attention to detail and pacing. It's not very hard or heavy on opposition though, though you may still be glad you have items in the inventory once in awhile. The problem with this level is the rather confusing progression. It can be solved if you take your time to check the automap for clues, but won't work if you're impatient or in lack of time.
HINT: at one point you'll encounter a small wooden door behind a priest bas-relief hidden door. There's no clue whatsoever, but that door needs to be shot to open! I had to open the editor to find that out, as no information got provided about that.
This wad seems to be a compilation. Anyway, here goes the per-level reviews:
An average dock level. Water hurts. There's an unusual way to wade through this water to open some barriers. Overall pretty blocky and not that well done. It's plagued by REJECT errors causing most monsters to be passive against you.
A dungeon level made of copy-pasted layouts. Overall much better and more slaughter-like than the previous map. Relies on switches and passages for the greatest part.
An even better and much harder level. This one involves some wicked layouts of passages and lifts, and uses symmetry to its advantage.
Overall, some super challenging levels but not very strongly structured, rather on the more abstract side.