Yeah ^_^U… the goo is broken (as other things). It's quite unforgiving right now[1] and the speed is not quite right; I thought it was too slow and I increased its speed in the last minute, now in some cases is too fast… Anyway, I want to try to make it adaptive, it should pressure the player but maybe in the first half the speed should vary[2] so it's present (to put some pressure) but it's not really a threat. As an alternative, using a timer is a good idea, it could be used as the score, and it would allow a more "contemplative" pace.
Then the map… I did it in the last hour and couldn't play-test it. But certainly that was the idea, the different paths based on privilege should have different difficulty or length.
Thanks for the feedback!
1: specially due to a bug, if you're falling a ledge on hit it moves down X amount of px instead of moving below the floor just beneath the player
2: e.g. based on the distance between goo & player, the less the distance, the slower it moves.