Not so many on here, but they also cripple attackers against a half-decent team.
This ramp should not be accessable from the ground:
Nor should it be possible to get back through this hole. Camping the room behind the hole is gg.
The other route is the single right-angled choke on the right, which is easy to hold. Most matches end up spawncamp fullhold now because of this.
These have been posted before, but there are 3 ways to get over the wall (at least) before its blown:
Left window:
Over the wall itself:
Right balcony via the containers:
