I would love some missions to end if I killed a certain percentage of all aliens instead of all.
I find it very tiresome (especially on the oriental urban maps) to search every single house for the one alien hiding in the bathtub.
This feature would be especially useful in larger scale missions (I've only had 7 enemies per mission up to now) when hunting down the last hidden enemy will be even more annoying because the maps are huge (base attacks!).
Another solution: If only 1 alien is left, it could...
a) ... approach the players and attack (okay, it makes no sense ingame, but it would end the mission quicker and with 100 % kills)
b) ... flee by moving to the edges of the map. (most realistic for a swarm-being who knows that all the others are dead)
c) ... give the player the choice: when the "win percentage" is reached he can: "Accept" (end get only the percentage of the points for the mission) or "Search the rest" (and thus gets 100 % of the points awarded)
I can remember not bothering at such searching times but my time has become more limited and thus wasting time on a mission that feels as if it was already completed has become an issue.
Keep up the good work!
And tnx for the project!
Andreas