OK, here it goes.
if you already know the story line, then you know where we are. The character is in Black Mesa, and needs to get out, because the aliens are there and they find them. so far, I did the first part of the BM part of the MOD, and we need some fluff in the middle. the character,(Kyle Johanson) has already got the crowbar, and the pistol, and has killed a few aliens. make the place all broken and destroyed, with holes and evidence of explosions. this is becuase BM was Nuked, but a little part of it underground still lives, and has aliens in it. THere are no grunts or people, besides anyone you want on your team to be there. the scientists that came with you are still alive, exept a few that were with your group. It can be a little like teh first HL, only with signs of death and explosion, just make a bunch of fighting, or puzzle places. ITs to add exitment, not just have the whole thing be a story line.
THnks