I've got a game and the PCs are at roughly 3,100 xps. I have four pcs and their fate point counts are :3, 1, 1, and 0.
We're about to tie up a long, 4 session, adventure which will see the PCs fleeing a hive city and escaping through an alien warp gate as Tyranids swarm over the city killing anything and everything. The session we just finished saw them taking out some fairly powerful foes including a single Chaos space marine through a combination of righteous fury, good planning, their psyker repeatedly making the space marine spasm and fall down (I never made a single willpower roll) and poor bad guy planning on my part. (Every bad guy was a melee oriented bad guy.) One player at least believes they deserve a fate point for this fight.
So, my question is, what is a good way to fairly award fate points? What standards do you use? Would the end of a major adventure like this qualify? Do you make the PCs do something extremely heroic and epic to earn them? I'd like advice here. As it is, one player may be losing a character before the end of next adventure depending on how things go since he is sitting on zero fate points.