Sanctuary Entrance

Sanctuary Entrance is a room in Sanctuary Fortress.

Layers
The kinetic orb cannons and turret do not appear on the first visit, even if they are activated.

Early Power Bomb Expansion
The expansion in this room can be collected without a Power Bomb or Spider Ball, using Screw Attack.

If you have a power bomb, you can do the first part of the room normally, breaking the Denzium glass and activating the kinetic cannons and turrets. Otherwise, Space Jump/Screw Attack up to the turret, using various crates and ledges. Then, Screw Attack behind the glass that requires a Power Bomb to break, activating the turret. Space Jump over the wall, and back to the turret.

At the turret, break the wall with the expansion behind it. Then, Screw Attack to a platform underneath the expansion, with blue tubes on it. Space Jump from the left side of the left blue tube, and use Screw Attack. Delay between Screw Attacks as long as possible to reach the platform with the upper kinetic orb cannon. Finally, Screw Attack across the room again to the expansion.