Been running around this for a bit...cool level!
Suggestions/Observations (in no particular order:
1. Make sure all your pick-ups are at 16 units, and have nodrop 1. Right now a lot of them are sorta bouncing on the floor, and some of the fx (e.g. health) are clipping into the floor.
2. It's hard to tell without final tex, but it looks like the spec on the rock might be a little over the top?
3. It would be nice if the rock and the wall around it looked a little less "all of one piece"? Right now the rock is just sort of organically growing smoothly out of the wall in many places, rather than it looking like the wall was built around the rock. I know this is a tall order (both in terms of the modeling work necessary and the actual increase in triscount), so feel free to tell me to bugger off.
4. I initially thought the MH and YA were too close, and I still do, but...damn. After spending about 20 minutes wandering around, I'm having trouble coming up with an alternative. It's just an idea, but how would you feel about losing the teles? They kind of make everything really close to everything...if you lost them, you could leave YA where it is, and put MH where the far tele is currently (near RG), and I think the gameplay might actually benefit...failing that, maybe switch YA/RL?
5. I like that you can slope jump up from LG, and I like that you can slope jump from there to the 2 +50s. Nice. It would be cool if you could slope jump up from under the shard bridge too...
6. Again, it's hard to tell with the rock unfinished, but it might be nice to see a slightly more memorable sky, rather than it just be sorta more gray added to the mix. This level has a whole lotta gray on gray right now.
7. Lighting is okay for the most part, but there are a couple of spots where it seems maybe a little overly bright or washed out to me--one is the area near SG, and the other is the jumppad room near RG. Both of those lights seem really white, and maybe that's making it worse. Pure white light generally looks kinda stark and crappy, and if it's not pure white, it seems pretty close. It's equally bright at RA, but that's under open sky, so it's more expected.
Hope this helps.
Looking forward to seeing a version with finished models and rock...