~ Roadmap to the secret Platinum Treasure in Borderlands time to trophy Hunt ~
Overview:
1 - Estimated trophy difficulty: Based on a scale of 5
2 - Offline Trophies - 50
3 - Online Trophies 1
4 - Estimated amount of time to 100% - 20-30 Hours
5 - Minimum number of playthroughs needed 2-3
6 - Number of missable trophies - None
7 - Glitched trophies - Yes, sometimes the "Kill 25 enemies with weapon X" and run over 25 enemies with a vehicle trophy can be glitched a not unlock when you have met the requirement, to fix this simply start a new save and do it again, they're attainable but sometimes they glitch on you.
8 - Do cheat codes disable trophies ~ There are none
9 - Does difficulty affect trophies ~ There is no difficulty in this game
1 -

2 -

6 -

41 -
Introduction
Borderlands is a great fun co-op game and single player, it lets you explore the world of Pandora. A RPG mixed with FPS, its humorous, fun and has a bazillion guns

It does a very good job with having a sense of that MMO feeling, good FPS play and a interesting RPG system/mechanics, probably one of the most interesting games of 2009 for the PS3. Call your buddies and have a blast!
Roadmap
Majority of the trophies can be achieved by playing by yourself, most of them are just tied to leveling, discovering certain quests that are story-related, so you pretty much get this as you go and level up to 50. There are some multiplayer trophies but most of them can also be done alone in the split-screen.
However, the only trophy you need to get online is "They'll Tell Two Friends" but most likely if you have played a multiplayer game you already got this, so don't worry about it.
In order to obtain every trophy, you will probably have to do 2 or 3 playthroughs total. Once you beat the game, your character keeps the weapon, money, loot but you can start again to keep leveling until 50.
First playthrough should be Single-Player only, unless you have a really dedicated buddy who is willing to play on a scheduled basis throughout the game to get all the trophies/level/beat the game. The first playthrough will get you to level 36/37.
Yours 1st playthrough will get you to 36/37, and get you majority of the trophies. You pretty much need a 2nd playthrough just to get to level 50 and get your platinum. The 4 trophies for each character's talent points should only take about 2 hours or so or maybe even less.
Once your done with every story-releated trophy and leveling, you should start doing co-op online or offline/splitscreen to get the rest of the trophies. This is an easy platinum just a matter of dedication and some time consumption
~ Trophy Guide ~

- Borderland Defender -
Description - You have defeated all bosses and are a powerful force to be reckoned with
Earn every trophy in the game to obtain Platinum Trophy

- Paid in Fyrestone -
Description - Completed 5 missions in the Arid Badlands
Easy, this probably will be your 1st trophy that you get when you complete your 1st five missions at the start of the game in Arid Badlands.

- Made in Fyrestone -
Description - Completed all missions in the Arid Badlands
You have to complete a total of 44 missions in Fyrestone, that includes DR Zed, T.K Baha, Shed Sanders, and Claptrap and Bounty Boards missions

- Paid in New Haven -
Description - Completed 5 missions in the Rust Commons
Can't miss this, you will get this as you go and quest through out the later areas in the game.

- Made in New Haven -
Description - Completed all missions in the Rust Commons
Complete every single quest that you get in Rust Commonos East/West, New Heaven I believe the number is somewhere in the 60s... will have to double check that

- My Brother is an Italian Plumber -
Description - Killed an enemy plumber-style
This is a fun trophy and really cool

You simply have to kill an enemy Mario style ! Once you start fighting Skags at the beginning of the game, shoot them a bit and get them to low health, once they're around 10-15 %. Just simply jump on top of them and you will deal small damage, keep jumping on them until they're dead. You only have to kill 1 enemy to get this trophy, and here is the video on how to do it
~ Credit goes to MidnightZero for finding the Youtube video and for starting the original thread on how to get this trophy ~

-12 Days of Pandora
(Secret) -
Description - Mastered the technology of Pandora
This is a simple trophy and all you have to do is get the following kills:
12 assault rifle kills, 11 pistol kills, 10 shotgum kills, 9 SMG kills, 8 Sniper rifle kills,7 melee kills
6 critical hit kills, 5 explosive kills, 4 shock kills, 3 incendiary kills, 2 faces melted,1 grenade kill
This is a *Secret* Trophy

- Wanted: Sledge -
Description - Killed Sledge
This is a story-related Boss, you cannot miss this, it's the first boss you encounter in the game (Secret)

- Wanted: Krom -
Description - Killed Krom
This is a story-related Boss, you cannot miss this, it's the second boss you encounter in the game (Secret)

- Wanted: Flynt -
Description - Killed Flynt
This is a story-related Boss, you cannot miss this, it's the second boss you encounter in the game (Secret)

- Destroyed the Hive -
Description - Kill the Rakk Hive
Kill the Rakk Hive, can't miss this is a story-related boss encounter (Secret)

- Destroyed the Destroyer -
[u]Description - Kill the Vault Boss/u]
Final story related boss that you need to kill, cannot miss this (Secret)

- Speedy McSpeederton -
Description - Raced around the Ludicrous Speedway in record time
You have to speed around the Ludicrous Speedway in Dahl Headland, here is a video how to do it ~
Credit goes to MidnightZero for the original trophy guide thread, and rabbidKitty 4 for doing making the video/trophy

- You call this archaeology? -
Description - Apply an elemental artifact
Easy trophy, just make sure you do every single quest that you get from every bounty board. I got this trophy around level 16-18 in Arid Badlands
I did a quest and got rewarded with a elemental artifact, once you get the reward just simply go to your inventory and use it, it will apply an artifact to your character's main skill and the trophy will be yours

- Ding! Newbie -
Description - Earned level 5
Self-Explanatory, just level till you hit 5

- Ding! Novice -
Description - Earned level 10
Self-Explanatory, just level till you hit 10