The only worthwhile slayer on Fighter tree for Hu/Fi is Photon Slayer for bossing/general tree. Deadline is kinda in the way and you're putting 3 SP there just to grab Photon Slayer. Similarly Crazy Heart is nice because 1.5 bonus to PP regeneration is big, even if you need to be luckily hit by some benign status like burn, but costs 3SP together with 2 levels in Halfline Slayer. I generally prefer putting points into Crazy after we get some more SP with level cap increases.

Chaser is really nice to put a few points into because a status on weapon costs you nothing but something like 30 attack maybe. It doesn't work on all bosses though (large minimap icon), but some minibosses (smaller icon) can be affected by certain statuses like poison for Cathedrans. Chaser's usability mostly relies on mob HP, and it's nice in Ultimate Quests when you're solo or other people have problems well killing things, but in EP6 we will get Free Fields with massive HP pools where Chaser is just about the best mobbing skill, and otherwise for a lot of content that damage does come into play and is really nice. If you want to have a Hu/Fi mobbing tree full chaser + brave stance only is also a good choice.

In general your Fighter skill must have maxed Brave Stance with optional crit (now not worth it), and maxed Tech Arts together with save. Rest is generally content specific where as I said Chaser is mobbing skill good in high HP content, Photon Slayer is all around small damage bonus of 5% or less but easy to trigger, and Wise Stance is for specific bosses only.

I would also like to add that Hunter is a strong main class, just too many people, especially JP veterans who forget to say they've not touched the game in some years, are stuck in outdated balance. Hunter is a great all around and solo class not only because you have some defensive skills available to other classes like automated halfline, but because of the moveset. Blaze Parry is basically gonna spank some hyper aggressive bosses harder than nearly every other other class. If you want to cover some more docile bosses there are also Partizan and WL with their own special mechanics that let you do big boy DPS.

FORUM