Other

When you pick up the core, the blue force field will disappear and you will be able to move on.

When you reach this point, which will happen shortly after the start of Chapter 4, the mission challenges will be unlocked.

One of the four artillery cannons you must destroy to complete the "Siege Breaker" challenge.

One of the four artillery cannons you must destroy to complete the "Siege Breaker" challenge.

One of the four artillery cannons you must destroy to complete the "Siege Breaker" challenge.

One of the four artillery cannons you must destroy to complete the "Siege Breaker" challenge.

After defeating the Small Encounter (Siege - Part 1 #1), this portal will open and when you enter it, it will take you to a secret location where the Gore Portal is located.

After defeating the Small Encounter (Siege - Part 1 #2), this portal will open and when you enter it, it will take you to a secret location where the Gore Portal is located.

Kill the demons in the area, then approach the emitter and interact with it to destroy it.

Kill the demons in the area, then approach the emitter and interact with it to destroy it.

Kill the demons in the area, then approach the emitter and interact with it to destroy it.

Ammo for the BFC you may need to complete the "Roundup" challenge.