Borderlands

I just wanted to post this up for people that want to do the achievement on their own. You can set up a local splitscreen match if you use a second controller and profile. Have the extra profile start up as a level 1 character and have your level 50 character that you normally use join that game via splitscreen. Run through the opening to the game takes about 2 minutes (with your level 50). The first travel point "inside" Fyrestone near the doc's place will allow you both to travel to the Underdome. Once there use your level 50 to role over the opposition. I timed each round takes 8 minutes to complete on average so your looking at 40 minutes each for the small challenges and 160 minutes per large challenge. I did this with a Berserker so your results may vary based on your character. There are great choke points available because some of the waves later can be overwhelming.

Gully: rocks on lower level far left of the stage can be hidden behind by jumping through rocks or jumping off cliff to get there. Great for level 15-20 horde waves.

Hell-burbia: far left of the stage use the crates at the top of the stairs to jump on top of the building (thanks indigoX00)... avoids enemies spawning next to you and avoids horde waves.

Ruins: to the far right of the stage in the middle of the board use the ramps. If facing the ramps use the left ramp, here you can jump up onto the ledge just above the platform to avoid horde waves. Also the bottom of this ramp obscures enemy line of sight and is a good place to regen shields if you get caught off guard.

Final tips: Take in class mods that regenerate health depending on your class or just use your berserk (for you Berserkers out there), this helps deal with the ever annoying double modifier given out by Moxxi of vampire (constant life loss but killing an enemy regens health) and no shields... this can be deadly to a single player, if the enemies spawn far away from each other.

Lastly since you are the only player you can pause the game and take breaks doing it this way

IMPORTANT NOTE: I have tested and confirmed a level 1 character can travel to the Underdome. Here is how: Step one sign in a secondary profile as controller 1 and start up a splitscreen match. Then have controller 2 join as a level 50 (or whatever level that has fast travel ability). Start the beginning of the game... use the level 50 only and go into Fyrestone passed the opening sequence. Use the fast travel post in front of the doc's place once your INSIDE Fyrestone. Only the level 50 can start the fast travel process, but once you do, it takes both the level 50 and level 1 to the Underdome. The enemies will still be roughly level 12-15 starting out. Hope this helps clarify have a great day everyone.

There's also a giltch that I found at http://borderlands.wikia.com/wiki/Mad_Moxxi%27s_Underdome_Ri... that will help you skip some rounds entirly. Using this method I completed Angelic Ruins in two hours. Credit goes to who ever posted this on the Borderlands Wiki.

"There is in fact a way to skip a few of the rounds.

What you will need:

1. Eridian Shotgun(Thunder Storm)
2. 2 players(one must be a low leveled character, the other a high level)
3. Timing

The steps

1. Run through the first 4 waves(The round skips can only be done at the boss wave)
2. Before the boss wave starts, position yourself aiming at the center of the stage(this can be marked by the ramp(the middle of the three sections of the ramp)

* Immediately upon the boss spawning, shoot and kill him with the thunder storm

1. Do not kill the henchmen yet.
2. If you see the curtains close while the henchmen are spawning, this has been executed correctly, otherwise you will need to wait until the next round.
3. After the curtains close, you will need to wait a few seconds until a countdown timer starts from 10.
4. After continuing out of the end of round stats, kill those henchmen.
5. Wave 1 of the new round will start.
6. A few seconds later, the countdown from 10 will start.

*
o After the countdown you will get the end of round stats. Continue, and the new round will start.
* The boss needs to die before his henchmen spawn. ie. Nine Toes would need to die before his dogs spawn


*
o You will still need to kill wave 1 of the prior round that you skipped.

Why do I need...

The thunder storm - Because regular bullets will only do 1 damage to the enemy, whereas the thunderstorm does a great deal of elemental damage fast enough to take out the boss.

To wait before killing the henchmen - The programming that was done appears to be that if there are no enemies the boss wave on the field after the first one appears, end that round. By killing the boss fast enough, you make this true. The henchmen still spawn, making it so that when you kill them after the next round starts, this is true again.

This basically saves you 4 rounds each time, as you will still have to fight wave 1 of the previous round. It will still save you the additional time, as wave 1 of the next round will spawn while you are still fighting that previous wave.

Note: Some boss waves this will not work with. Their spawn time is delayed or they have extreme recharge on their shields upon spawning. So basically you'll be able to get, within the 20 rounds, 3-5 of them skipped, which can save upwards of 1-2 hours depending."

One thing i would like to add is if you enter into someone's game in the middle of one of the tournaments you will still get the achievement even if you join in on the last wave of the last round.

The easiest way I have found to do this will require you teaming up with at least two more people whom have characters at level 50.

The best thing I've found to do is for the host to be a level 5 (you could be lower as well) character and your friends bring in a level 50 character or the highest level character that they have.

The game scales the enemies to the host so if the host is level 5, then all the enemies will be level 5 making it easier on you because your friends are higher up than you.

The main thing is for the level 5 character to stay out of harms way for the most part. I'd suggest keeping one of your friends close that way if you get downed they can easily heal you.

I'm using the Siren so if I get in a bad spot, I can phase out and run to a safer spot, hence the reason I suggest being level 5. All in all each arena should take you around 1-5 hours to complete. Hope this helps, good luck.