i have downsized everything a lot, thank you b4nny for the feedback, thanks to a lot of others for various bits and pieces
• pushed in sides of mid, all 4 sides
• moved rocks closer to the point on mid
• made flat areas beside mid smaller by 128u. added cover.
• moved around a little geometry on second due to resizing on mid.
• resized lobby a lot.
• resized last a lot.
• removed secret
• pushed sides of last in.. shortened right entrance from attacker's perspective