I made serious progress on Half-Life: Uplink Extended yesterday.
The brushwork of maps 2 and 3 are pretty much done, only left is some refinement and tweaking. I also connected map 3 to map 2 with a trigger_changelevel. Ill start working on the second part of map 1 shortly, which is inaccessable at map start. So:
Half-Life: Uplink Extended Project Status:
uplink_ext1.bsp: 40% completed
uplink_ext2.bsp: 99% completed
uplink_ext3.bsp: 99% completed
You can find some more information about HL:UE on my website.