Ok, this game uses the Unreal 3 Engine, which means a lot of things can be manipulated through the configs. The configs are quite long but I have found some interesting things.
All configs are located in your Documents\My Games\Borderlands\WillowGame\Config
游戏用的是虚幻3的引擎，就是说有很多东西可以改，configs文件很长，但我还是发现了一些有趣的东西。所有设置文件都在your Documents\MyGames\Borderlands\WillowGame\Config处。
Inventory Size
Open WillowGame.ini and under [WillowGame.WillowInventoryManager] you can change the inventory size. This should fix the annoying problem where it seems like you need to throw out every other item you get to make room.
无限背包
打开WillowGame.ini，找[WillowGame.WillowInventoryManager]，就能调整背包大小了。这样就不用扔掉其他东西以便腾出空间保留某些物品了。
God Mode
Under [WillowGame.WillowPlayerController] there is an called bDemiGodMode=False set it to true and you can't die. Your health will fall if you get hit, but once you reach 1hp, it won't drop any further, making you unkillable. I don't know how well this works but I let some enemies beat on me and didn't die.
上帝模式
在[WillowGame.WillowPlayerController]下面找bDemiGodMode=False，改成true就能无敌了。你的血量会在受到攻击后降低，但在降到1hp时不会阵亡，从而达到无敌的效果。我不知道它的原理，但测试有效。
This is all I have so far. I'm looking through the ini right now to find some more stuff and I'll update this topic when I do.
我就发现了这些。等我更仔细的研究ini文件后，我会及时更新。
Easier Upgrades?
Under [WillowGame.WillowCheatManager] you seem to be able to set the level needed to upgrade your stuff.
更快升级？
在[WillowGame.WillowCheatManager]下你会发现可以修改每一升级所需要的经验点数。
Example: ResourceUpgrades=(ResourceName="d_resources.AmmoResources.Ammo_Combat_Rifle", PlayerLevelForEachUpgrade=(2,7,15,24,34,45))
补充：资源升级=战斗突击步枪的弹药，每次升级的玩家等级=(2,7,15,24,34,45) 『译者：我也没看懂，不好意思』
If you set those numbers to 1 then it should make upgrading a breeze.
如果你全部改为1，那么你会发现升级轻而易举。
……