Guild Wars 2

So I hit 80 and I’m running around on my Engy, and I’m trying to figure out what I should be doing here.

Am I to assume that Condition Dmg is meant for Pistol/Pistol

while Power and Precision and Crit Dmg is for Rifle?

And can anybody give me a good estimate on how much HP I should have? I have about 24,000 Hp right now with my weapon out.

I’m also wondering how much Toughness I should be stacking, is it even necessary? Or is there at least a minimum amount I need to be survivable?

I’m talking mostly about PvE, but if you guys have any comments on what stats should go with which builds would be much appreciated too for PvP.

currently. pistol are dumb and rifle are for lazy people.
as for your question. not really. all stats for all weapons are useable. but if you talking about traits. rifle is only from precision traits which is firearms. and power is power it will raise your damage whichever your weapon is. best mix for damage is more power more critical damage % + precision from armor. berserker equipments is your answer.

as from HP. we dont have that many hitpoints to begin with. arenanet make a mistake from a shield system standpoint tho. if you use a shield the damage will decrease significantly even you dont have that much tougness or sum up armor from stats. even your tougness reach 2k or more, a shield with lower tougness will absorb the damage more. dont ask me why. cus i still dont know why they make it that way.

but

i suggest you go to weapon kits.
grenade for high damage
flamethrower for toughness
bomb for medium damage and condition also healing if you want your traits go to healing ( combine it with elixir gun is a good match )

an engineer always on edge if you want to be better.
example. grenades better at damage but you are weak in defensive.
bombs can be balance but not really high at anything
bombs can maximize healing combine it with elixir gun but you not doing so much damage to enemy.

this traits you should look and practice at.
grenadier [ Explosive XI ]
juggernaut [ Firearms XI ]
Elixir Infused Bombs [ Inventions XI ]
and you should look for combo you can use from Kit refinement [tools IV]
more example : if you use Kit refinement. when you change your kit to elixir gun it will cast a light combo field which heals you and remove conditions and which you can combo finisher [ Blast ] from shield or destroying a turret or anyother means to get a retaliation.
there are many combo you can make with engineer.
tips for you. when you put a healing turret the first time it will cast a water combo field when it sprays water. so when you put the turret and wait till it sprays quickly destroy it with F1 as default you will get area healing.

there are no definite answer for engineer since everyone has their own style. its the tricks you need to find and practice on.

if you like high damage i suggest you research grenadier traits to get maximum damage.

a build is not bound by traits only. its all your armor and trinkets will have to change when you want to change builds.

but like i said other people have other play style. depends if you are lazy and use 1 armor or you want to stand out in spesific areas.