The whole jumping/platforming system has been reemoved. The system itself wasn't bad or broken (albeit was left fairly unexplored and simple) but for whatever reason, it's clashing with the far more important "tech points" script. Every time the player had any interaction with the platforming script, all tech points were instantly and fully restored.
Which kinda destroyed the whole "be careful with your supplies" aspect as it made marines, grenadiers and power claws essentially free to use forever.
Running through the maps will be a bit more boring, but I've done what I could to try and keep those maps visually intereesting. I just dono't know enough about scripts to try and fix the compatibility issue; seems so random to me.