Crit Rate / Special sword build

It's possible, I would recommend using Ultimi/Shiraito for leveling up, due to the -delay of Ultimi you would be able to spam Hard Hit faster, it also has Critical Rate and Critical Damage, so you would have to invest less in Technique. Shiraito would help with ATK for better overall damage, Critical Rate for better "hit" chance, VIT for some initial HP and a tiny bit better damage, AGI for a tiny bit better ASPD and EVA, and Item Recovery, for less potion consumption while leveling solo .

If you do mq, your life with hardhit is shortlived, since solo mq for pally is relatively easy when you have the right gear and/or proper resources. At worst, having a pet revive you multiple times gets the job done.

When you have guardian, auto attack doesn't make sense, unless you add CRT.

I have a video in this forum that demonstrates berserk with 1CRT via crit rate gear but it is just for fun because you dont proc double attack often and your crit multiplier is very low.

Berserk is a short aspd buff that costs 150mp+ (consumes all your mp, gives longer duration if you have excess mp). Your hit rate doesnt change so if you miss in your slow attacks, you will miss on your fast attacks.

Double attack is a warrior skill that procs 5% base, increased 1% for every 9 crt and can proc along with your crits.

There is no way to avoid mp pots use and still be effective unless you max aspd agi and max crt, but then you lose so much stat points.

I have an item delay potency gear in this forum to relieve paladins from consuming too much pots. I consume about half less mp pots because my remagic L heals 600+mp instead of 300mp. It can also be used to save onigiris and give capability for solo bosses because your hp recovery is greater than your hp loss.