When you arrive at a checkpoint, there is a secret you can grab, marked by the number one on the map above. Head into a small side room here that looks like it just contains some crates. Smash those crates, and you can drop down into a tunnel. Follow along to find a ring, then keep going to find a gap you can drop down to arrive back at the start.<\/p>
Now, there is a red door here that I have yet to figure out how to open. I will update this guide as soon as I crack this final secret.<\/em><\/p>
When you have the ring and are moving past the checkpoint, you will know things are about to get real. Make sure you have good weapons with you before you drop down into the next section. I used the Bonesaw for this area, as it is easily the best weapon in the game with the Hot Shot mod attached. <\/p>
This is a long process, but what you need to do is move through a number of distinct areas and wait for large mechanical arms to move pods. When they move the huge structures the pods are on, it will grant you access to access to the next area. While you wait, you will be assaulted by mobs of enemies. Prepare for a stiff challenge, as they will just keep coming. <\/p>
