Just checking a few of these in my levelpack's folder, these are my opinions.
Adurdin: Complete, but hard as heck. (No KeenRush, but darn man.) One single big level addition to the game, all other levels remain intact. The level is most certainly possible, avoids major graphical glitches and has a logical progression to it, but it requires considerable skill to complete and can be a bit plain in places. (All the flames and electricity are the same animation frame, tsk!)
Airefresco: Beta at best; more likely alpha. This is again a level that's structured and complete, but incredibly basic. I could whip something like this up in literally five minutes. It's full of blank, empty space, scads of dangerous enemies and the exit is surrounded, for no reason, with glitchy electric arcs. In that sense It's one single, very cheap level that has problems; it shows a distinct lack of effort.
Bounders: Complete, but damn. This level is very, VERY easy to mess up, right from the start. Ad it's very difficult to figure out what you have to do. There's also scads of enemies and shooters all piled up in one place and lots of pointless things. Given this I might be tempted to score it as an alpha, since the level itself has some very odd graphics choices and is, yet again, a single level. KeenRush would make this level easier, just in making it flow better.
CKGuy: Why are you doing this to me? Complete. I have bad memories of this level, what was WRONG with people? It's another one that's so damn tricky, right out of the gate. How do I get those three cards? Just 2? Ok then. Wait... NOW the third? I can go up but... red door? Dammit! This level involves so much backtracking and obscure tricks. A lot of thought went into it, but daaamn. Also this is why I think level borders should be in Keenwiki images, LOOK at all that stuff going on! But we cut them out, why? A lot of my Galaxy levels rely on such trickery!
Dagneilius: Complete, sweet relief. Very basic, and again, levelPACK? There's just one. It's a solid level whose graphics make sense with a basic enough structure. It does have some cheap tricks in it near the end but its a pity there aren't more levels.
Garg: You hate me don't you? Complete, but really deserves a beta. I am quite confident given the solid design of this level that the author did what they intended to do. However this was not very much; the level is about as simple as it can get, a literal 10 year old has done better. (I think we all know who that is.) It really needed a lot more... well level DESIGN. I could crank something like this out in MINUTES.
Now, off to play some CandyJunk...
What you really need, not what you think you ought to want.