Halo: A Bit Andy Warhol?

[SomeNaiveChump]

Could you spawn a warthog on the library level or is that just stupid?

you could hack the model assignments so that guns could fire anything, like extra master chiefs, warthogs etc instead of bullets

[Devilfish]

The forthcoming SDK kit for the pc verson should allow people to make Halo levels and mods.

[Cheeko]

Played through Halo recently and was dreading the Library, but then discovered you can miss out large chunks of the level by going round on the inside(by the big drop in the middle) and just jump over the chunks of wall sticking out toward the centre (if that makes any sense, probably not)

Apart from when you have to wait for the spark thingy open the doors you can just storm most of the level. Run Forest!