firstly, shoutout to arandomegameTASer for bringing about the death of ikachan RTA - nah kidding, the 2 glitches are pretty cool and i've been able to pull it off RTA:
http://www.twitch.tv/lurkchan/c/4125947
since you save no one, i ended up making this run "any%" and since you save everyone in the old route, that is defined as "100%" (not that it has a percentage counter, but you do save everyone so 100% of everyone saved vs any% none of them saved, it makes sense) there is an argument to be made for "getting all the fish" but that is really boring, and if you miss a fish you can still finish the game, whereas if you miss any of the NPCs you cannot finish
i'd like to point out that the current movement is optimized quite a bit, but it can be improved. for example, the first crab you run into seems like it can be avoided in some way without losing many frames. the second crab you run into actually helps you clip through the fish above, even though you annotate it as "hating that crab."
i'm sure you can find the most optimal ways through everything if you keep trying. it's certainly not easy to control ika precisely