I said this in the comments, but it seems applicable here as a discussion topic as well:

This mod is great, but all that high water jumping stuff feels really inconsistent, It's beyond frustrating and hurts my hand trying to perform the jump. There's like a 30% chance the jump will even work for me. I feel like this whole area is centered around using a glitched mechanic. Maybe make the high jump easier to perform? Or at least adjust the levels away from using the jump. I really want to continue and beat this stage, but the hand cramps I get from trying to perform 2 high jumps in a row consistently is deterring.

Thank you for the feedback! I understand the difficulty of doing water jumps, it took me many MANY deaths before I started being able to preform them even semi consistantly. It is a very difficult technique to learn and being able to do so can help you with any other mod that involves water as well! Quite a few speedrunners are able to use the mechanic when zooming through Overflow and Ruin so I believe that while difficult to learn it is very much possible to master.

Unfortuneately Tethys is very much centered around the mechanic, thus being able to preform it on demand is a requirement to beat it. I apologize that the jump is causing you discomfort, maybe switching up your control scheme might better enable you to preform them? Otherwise it may be worthwhile to check out some other mods that don't readily abuse the mechanic as hard as this one does :P

I suppose this stage is for those who would like to master the jump. You also can say this mod is for the more skilled, or those who want to challenge themselves further. But sadly this mod just isn't for me i guess. But that doesn't mean other people can enjoy it! I'm sure a lot of people will enjoy learning this technique. I wish everyone luck with their future with the water jump :)

I like the concept of this mod and I really want to see what it has to offer, but in a similar manner to most TEIN mods I have seen, it's just not at all accessible to any player that hasn't sunken like 300 hours into the game. (with at least 100 of those hours probably being spent on practicing water jumps) This game is amazing and I love it a lot, but the modding community is just WAY too focused on difficulty and absolutely nothing else.

Even as a player that has 100%-ed the entirety of the main game and competed every cartridge, I still found this mod to be awfully inconsistent in its mechanics, infuriating in its difficulty, and generally completely unplayable without extreme anger and hand pain.

I really do hope that any future TEIN mods distance themselves from this thoroughly irritating trend of being absurdly difficult and inaccessible to 99.9% of the player base. Don't get me wrong, I love a good challenge, but most mods I've played interpret said challenge as "go ahead and die 1000 times on this level until you find the one single pixel perfect route you need to take". I'm pretty sure it wouldn't be the end of the world (ha ha) if someone made a mod that didn't eat up thousands of lives and make anyone want to break their keyboard in frustration, so long as it was interesting and enjoyable.