I've reached the room where I'm supposed to go through the pipes to reservoir 2, but I can never reach it in time- any codes or mods that either move me in the reservoir of help me swim faster?
As you're specifically asking for cheats, here we go:
Enable the in-game Console
To do this on the Steam version of the game right-click on VTMB in your library and select Properties. Open the General tab and then click
SET LAUNCH OPTIONS.... Enter
-console in the dialog and hit OK.
For the non-Steam version:
On Windows right-click the shortcut used to launch the game (create one if you haven't got one), click Properties and open the Shortcut tab. In the Target field you need to add
-console (note the space, it must be included!) to the end of the existing string and hit OK.
For a Mac you need to open
...Preferences/Vampire Bloodlines Preferences/config, then add the following to the end of the file:
[appdefaults\\vampire.exe\\transgaming] "cmdlineadd" = "-console 1"
Launch the game and load your save
To access the console you can use the tilde (~) key or the grave (`) key (whichever is to the left of 1).
Once open, enter the command
noclip to disable collision detection and allow you move through the walls to get to where you're trying to go. Enter
noclip again to turn collision back on.
It is worth noting that using cheats can break some scripted events in the game and should be used with caution. Create a backup of your save before you try this.