It is something that we didn't manage to make clear as well, the upgrades on the right are not totally in your control -- the whole thing is a bit weird, to tell the truth --, but you can use bugs to make these happen a bit earlier, but after some time they happen by themselves, and the worse part, that are probably really broken, is that some of them are cyclic, which probably broke this buy to advance mechanism after the first time...
We could only use the second weekend to build this game, so.. there are a lot of inconsistencies, possibly for the best :} (...both for the spirit of this jam and my PTSD with the subject of the game)