Updated the mod to version 1.4.0, in line with TMod's April 2024 update.
The only real gameplay change is that the Golden Shine Potion is a little brighter, other changes are mostly internal.

Great mod, tried it out in a personal world and it worked as expected, just throwing the idea of mod support out there if you wanted to add it.

I like this mod. Dunno what else you can add to it but I hope it gets more stuff as part of it.

@foodytood - As it turns out, the buff was affecting all projectiles instead of just arrows.

There is something wrong with golden archery potion. If I take of it and swing a shortsword, the sword's reach and damage is extremely increased.

After just over a year, the mod has been ported to 1.4.4!

Taking that the Golden Critters are super weird, the recipes should be usable on 30 potions in the upgrades

Just make the golden feather fall have a fast fall effect when pressing down.

So not only was it reducing damage by 80% instead of 20%, after looking at the source code for the regular endurance, it turns out the way I was reducing it was completely wrong.
So, double-fixed.

After playing a bit more, I am inclined to point out that I don't think the golden endurance potion is working properly. Somewhat recently got that available for use, and it seem like it reduces damage taken down to 1 no matter what. Going from taking 100+ damage to literally 1. Feels a little bit like I'm cheating when I use it.

@Null : Thanks for the feeback.
Turns out the issue with the rage potion was just down to me misunderstanding how tml handles crit chance modifying. Should be fixed next version.

As for the featherfall, I'm not sure if I should convert it into a duration upgrade, change how it upgrades the buff, or just leave it as is.

The mod started working. Have used it for a decent bit so far, and I have 2 things to say. First thing, the Golden Rage isn't working. I tried using it with and without the regular rage buff. When used alone, it does nothing. When used with the original, it cancels out the normal one and still does nothing. Obviously when the regular is used, I get the 10% crit.
Second thing: I am personally not a fan of the golden featherfall. It's amusing, but mildly annoying more often than not. I tend to use my jumps in a bottle less than a block off the ground very frequently with that buff.
Other than that, I enjoy using the mod.

@Null : The mod was published for the 1.4-preview version (which will become the 1.4-stable version by july)
Maybe I should publish the next mod versions on the 1.4-stable version

I can't enable this mod. Something wrong with 2 of the methods, as tModLoader says.