Finally got around to remaking Recycling Plant, using the Oriental set. It's probably a bit easier than the original L2 version, but I'm quite satisfied with how it turned out.
Solved the following levels, solutions attached:
Untitled Columns: Pretty bad backroute I guess, just brute force.
Ascending and Descending: That one was tricky, having only the basher to use. I wonder whether it's possible to solve the level having the top group just go straightforward.
It's all about survival: I can't seem to get around using some pixel-precise bomber timing here. I don't really like that, unless there's a way avoiding it. "Yellow Brick Road" is perfectly fine with me on the other hand, I got the first 3 bombers right at the first try.
Completely Ridiculous level: My solution to it is unexpectedly clean, actually. Saves some skills. Is the title final?
Now this is Fun: Basically the same as Proxima's solution, just slight differences.
Under the Rainbow: I really love the design of this one, using the colors and water/lava like this. Avoiding to drown when bashing under the water is a bit of an issue, but I guess it can't be helped, unless the check for the water trigger area gets changed, or I make some blue water pieces with no effect for instances like this. The 2 junction pieces at the bottom in the purple/magenta part should be moved 8 px down I think for a consistent look.
Hard to Port: Having the fall just 1 (low-res) pixel above the max fall distance makes things a little bit nicer.