Well... This Environment definetely don't fit to SligStorm, so if i want to help you, then i need to start creating new environment from beginning, what isn't very probable, because it is a lot of work with creating detailed 3D environment, and i'm actually working on three projects (Rupture farms scene, Unreal Tournament 3 map, and i'm creating few models for Witcher modification).
And second thing: Even if this models fit to your project, i still need to reconfigurate level (you probably don't want exactly copy of Abe's Odysee levels
)
If you prove me your skills, then i can create some single models, which you can use in your project