Cave Story/Labyrinth

Labyrinth Jumping
You wake up in another cave. There will be some blue robots nearby who you can talk to, but they don't have anything interesting to say, so shoot out the breakable block and save. Once again, this part is going to be difficult if you don't have the level three machine gun, but the spur is worth it. Equip your newly acquired blade; it can kill the purple critters in one shot. In fact, it can kill almost anything in the labyrinth in one shot. You will be relying on it a lot, so don't neglect it (note, though, that when it goes from level 1 to level 2 it decreases in range. However, it becomes more powerful and gets plowing abilities, so that's good). Anyway, jump up the platforms, and try to kill the critters before you aggravate them, because dodging their projectile attacks while not falling is a major pain. About halfway up, there will be an area on the left with 3 critters. One of them is standing in front of a life capsule, so take them out and get the capsule. Near the top, you will run out of blocks, but then a big block detaches itself from the wall and moves towards you. Jump on it to trigger another. Jump to the very top on these blocks to find a terminal, which opens the door. Jump down (don't worry about fall damage) and see that the blue robots (except the one which looks dead or out of fuel or whatever you'd call it) have gone through the door. Follow their lead, but don't forget to save first.