and I will say this:
asset development was hell
but programming was only easy because I made it seem so. we had ALOT of things added to the base game. new team system, new events, new STATUS system, new deployable system, new UI ideas, NEW FUCKING UNIVERSAL WALL WALKING.
And then of course there was the part of modding the actual supplied game code just to build support for these features, correcting some of their parts to not use short term hacks and finally, reimplementing the whole goddamned water system the game comes with.