I've been placing clip brushes, fixing paths, changing textures, basic stuff what's been pointed out.. I think i'm going to make the bd/side path bit more faster, at the moment they're 2-7 seconds slower than the main path when going from flag to flag. They're also more clumsy, so it's easier to lose time.
I'll attach an image for you criticize the textures. I went with the ctp asphalt. I liked jitspoe's texture, but the pattern looked bad for me in game.
Finally, if someone is interested and willing to help, could someone make few graffities for me? I think they need to be .tga textures with transparent background. Then i need to make 1 unit thick brush of it and so on? It was done like that in ub_rooftop ( i took a look, sorry
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Edit: Added pics with jitspoe's texture also