I've had a short glance at ClamSpammer's levels this evening, and I solved 6 of them for now. Haven't solved the last three nor level 4 yet.
First three were of a somewhat different style, you know roughly what to do, and need to find out the subtleties. Weren's so hard though.
For level 4 I don't see a way atm how to do the last part, got to check that again.
On level 5 I had 6 builders left. The following level was a very elegant one, I really liked it, even though the main idea was sort of obvious.
Level 7 was easier than expected, had one basher left, not so interesting one.
Level 8 seems to require a
very good timing, so I skipped it for now.
I haven't really looked into the last two so deeply, but level 9 seems pretty intriguing, and the last one seems to be a very elegant puzzle.
So much for now, and btw, I prefer straight terrain as well.