I'm a bit surprising from you Safe, that's a compliment.
When I specced Spy, I was wondering who made this map, I said NuLL but then I noticed your name.
You improved a lot since your previous map, most ostacle are from DM / CTF maps but it's nice that you mentionned and use them. I like the lava effect that kill you when you go throught it. The BrokenLimits flagroom's bouncer is a bit tricky cause if you're not fast enough, the door will crush you.
But it's pretty hard to die, it's a great thing you added water under the 2 dodges.
Only one negative thing, it's the target radius. In most map, it's the whole hole that you just need to shoot, but here, it's a big square in a circle, so you can shoot just near the square, and so you have to make it again.
Oh, and that Bleak jump is freakin' annoying too, should have put it earlier in the map, but gladly you don't put water nor lava under it lol.
Lovely map - well-designed and well thought-out. Most of the "tricks" have had cunning additions, rather than modifications, and it's generally a lot more pleasant than the original peaceful map. I reckon difficulty of 3-4.
There's still some tricks you missed from DM/CTF maps though...