Hmmm
Well the first tune has a nice pumping loop, that is too low in the mix.
that guitar is way to loud, and if you are using protools, then really, you should dump that sample and use something with more life. refx Slayer is a fantastic guitar synth vst that has loads of live, harmonics, feedback etc.
the riff alone isn`t enough to drive this tune, there definitely needs to be more elements within this track, to make it interesting.

The second track, well, as you said, the levels are all over the place, so really these need to be seriously sorted. The kick and percussion is so muffled and buried it`s really hard to get anything clear apart from that really loud synth.

Dude, I`m assuming you haven`t been making techno for very long, and if this is the case, Pro-tools is a seriously pro environment to be working in, and really before you tackle that, you need to get your basics in order, cos from the sound of this stuff it would seem you are buried in technology.
Basic clean eq will help you out for a start.
And as for levels, well, they should be well sorted out, long before you go for final mastering.

Keep us posted on the progress of this stuff.