Metroid

I was blasting him with the wave beam for a good while and then switched to my rockets. He went down with one rocket. It was odd and kinda interesting. Though that wasn't the last upgrade, since we didn't get anything this time. Lets just move on. Continue moving right until you've reached a gray room with a few jumpers. They can be annoying at first, but you can destroy them or avoid them by jumping up on the platforms. Go through the other door where Samus will meet another jumper. Avoid or kill it and then go through the door. It looks like you've came full circle to the otherside, but you didn't. The door to the left is where the upgrade is. To reach it you will have to bomb hop your up and then roll through the small tunnel. If there is any crawlers, wait for them and then shoot. Enter through the door on the left to be in a blue room with some platforms. Jump across the few platforms to reach the missles, it is time to get out of here. Turn around and into the gray room. Jump to reach the door on top. Go through it and keep heading left. You will see the same tunnel again, now you have came full circle. Go through the door to the left, now it is a one way route to the higher levels of the elevator room. Jump your way up to reach the elevator, now we're back in Brinstar. Work your way up and head right to the vertical blue room.