Back again on Asylum since I cannot remember where I left it and I am working on this when I feel like to and might share it eventually.
The whole map should be more clean compared to the original one (working by x2 ; x128, x256, x512 and so on to it will be easier to fit textures, no stretching and stuff).
This also should get rid of glitches, lower map size itself (might help with fps?) and other stuffies.
Step 1: Import original map, so we can base the whole map of it
Step 2: First work out all the walls and add some depth in certain walls (no single walls on certain spots like red base)
Step 3: Work out the floors
Step 4: Work out objects
Step 5: Work out the ceiling
Step 6: Add new area's if needed/feel like doing so
Step 7: Textures
Step 8: Collision
Step 9: Lightmapping & spawns
Step 10: Testing time!
[B]Progess
http://i.imgur.com/0HyDf1j.png