inb4conan
Fffff
lacking sloping at the bottom of the short cliffs. Also, cliffs clearly based on baseplates which is a no-no for terrain.
Also looks too small for a tdm, at least for me. I suggest either restarting from scratch to get the base flat terrain right or expanding it and fixing the base terrain as you go.
Interestingly this combines the two things I enjoyed making the most, tdm and terrain. My tdms weren't that great, though.