I thought the size of the game was mainly related to its assets, but I've watched a gameplay after my first ending and now I know why this is so heavy (I mean relatively to the lowpoly assets/textures we see).
Anyway this was fun to play, some ending are actualy original and out of context but I really enjoy it, I'm not a native speaker so I may have missed the part where it says that you need to put the liquid in the "church"(?) river, or maybe this isnt explained, so making this a little bit clearer could help others.