The cr.lk xx cr.lp -> s.hp link is character specific and standing/crouching specific. IE not consistent. Just one S.lp/cr.lk/cr.lp -> s.hp is really the only consistent link into S.hp. That’s why I do the cr.lk xx cr.lp -> cr.mp link.
As far as the trial goes, it’s just timing. You’re doing the s.hp too late.
Edit: Actually, maybe it’s consistent if you walk forwards first?
I would say he might be doing it to fast 
I mean, I trust what you say Kikuichimonji but I couldn’t do it consistently when I tried to input the fierce punch faster. I tried to find a slower pace in which the combo would still connect.
I’m a noob if you haven’t noticed. Don’t take my word for it :shy:
I have noticed that if you just squeeze in the hard punch it will connect much more if you just mash away with the buttons but this is by far the hardest trial ever even more than abels hard trial 5 wich is way way waaaaaaay more easier than this…but still I am not giving up on that cubic head seth
and if you walk forward while doing it hard punch is consistent
I didn’t have too much trouble with Seth’s Trials… only ones that were annoying were Hard Trial 4 & 5. But I finished them all in a day.
so guys I finally did it…I got my cubic head seth action going on…gotta say that seths hard trial 4 is and was one of the hardest I’ve done…but I stopped cheating with the qcf motion and I got more sucess with the ex booms
hard trial 5 was a cake walk
Grats! Now go finish Viper’s! Just kidding.
I can’t even do viper’s super jump…I’m gonna stick to Dans hard trials
Dans are like medium difficulty. Bison and Akuma were the easiest for me
The two easiest for me were actually Seth and Roses.
The only ones I haven’t completed are Fuerte (4 and 5, but I can do 5), Balrog (5), Abel (5), and Viper (5).
I swear I’m doing alot of these right and ont he last attack dan just throws a block and blows my shit up ARG!
I haven’t done Ken 5, Viper 4-5, or Gen 5. I could probably do Ken 5 and Viper 4, the other two I think I could live a full life without doing. Akuma’s were great, I did them all on the first try, and Bison’s only remotely tough one was either 4 or 5 where you have to link c.lk > c.lp > c.mk. I’d be up for some new DLC trials and unlocks and whatnot just for something to do when I get done working graveyard shift.
Hard Trial 4 is enough to make a grown man cry (take it from me), lol. I use Seth exclusively since the console game came out and I too am desperate for his icons. I got to G2 in 2 days but will not allow myself to do anything else in the game until I can do Seth’s trials. This is killing me, but I have slowly gotten better. Persistence is the key. I have managed to do the combo without the light kick at the beginning, this means Seth is closer and so the uppercut comes out when and here is my big cheat, I hold down fierce punch with turbo fire enabled on that button! (On the TE stick)
I can do c.lk > c.lp > hp and I can do hp > ex sonic boom > ex focus Lv2> ultra separately now all that remains is to put the two together.
Hopefully this method will be of help to some people as it has helped me get the hp instead of stretchy arms more often.
OK I did it this way. The first time I was so shocked I let go go focus too early and didn’t get the crumple, but I did it again and got it to work. I advise not dashing after the focus you have plenty of time to land the Ultra, be calm at this final stage and don’t rush. I am so happy! I finally did it! Hope this helps people with turbo fire controllers. For those who don’t I wish you the best of luck!
You gotta do the link fast and and right after the ex sonic booms hit u do a level 2 focus and do his ultra, I finished his trials not too long and I’m rocking his icon just cuz it looks so dope.
seth’s trial mode emphasizes that sonic boom xx FA2 shit wayyy too much, i’ve pulled it off before in random online matches for fun but it’s way too unreliable to waste 2 bars on it. useless trial mode combos, it’s shocking i know
It’s reliable if you can do it consistently. Shocking I know. 
listen to this man. he fucks my seth up in mirrors with this. 
It’s actually one of the few things I picked up from the trails 
It’s a waste but it’s fun and that’s what counts :party: lol
I just started this trial and I’m trying to get the (C.LK xx C.LP -> S.HP) link down but I’m not consistent with it at all with it. Should I do the C.LK xx C.LP link slower? I’ve tried doing it fast and it comes out like 40-50% of the time but it still feels random.
I want my Seth Icons 
I’m no good at c.lk xx c.lp -> s.hp so i do (corner) c.lk c.lp st.lp c.mk xx sonic boom xx fa -> s.hp xx EX sonic boom etc instead for the trial.
but anyway yeah keep trying. you’ll get it soon enough just doing it the way the trial says.
It can be fast between LK and LP, but it has to be a tad slower from c.LP to s.HP.