So my first perk is a health boost of +6, so I assume this gives me six more bars of health.
But does the Needle Shield III really give me high pierce defense? So, if I had high pierce defense on my armor, would that mean I have max pierce defense?
Does the Bomb Focus II really give my bombs an additional charge time reduction medium?
Does the Liquifier III actually make all my weapons do an additional High damage to slimes?
Do people change their battle sprite options for every different level, or save them multiple loadouts?
Finally, do you think a sleep resist option going to be added to our battle sprites, too?
You might want to read the wiki page "Abilities", to learn how abilities work.
So my first perk is a health boost of +6, so I assume this gives me six more bars of health.
Yes.
But does the Needle Shield III really give me high pierce defense? So, if I had high pierce defense on my armor, would that mean I have max pierce defense?
There is no limit on damage defense, so "max" doesn't really mean anything. But yes, you get +3 from your armor and +3 from your perk, for a total of +6.
Does the Bomb Focus II really give my bombs an additional charge time reduction medium?
Yes.
Does the Liquifier III actually make all my weapons do an additional High damage to slimes?
Yes. It gives your weapons damage+3 against slimes, up to a cap of +6.
Do people change their battle sprite options for every different level, or save them multiple loadouts?
No, I do not change my perks on every level.
Finally, do you think a sleep resist option going to be added to our battle sprites, too?
I do not know. Or think, even. Cheers.