got up to level 75 spamming Nova. Now I am in Hell difficulty and basically everyone is immune against me
Respec into a hybrid build, or try to grind for one of these:
Is Fire/Hydra good for this one? I seem to lack DPS on the hydras :/
Best element is ice (because of the brokenness of the cold mastery skill), best for playing through the game is ice/fire hybrid IMO.
I make a Hyra/Frozen Orb sorc every almost every ladder reset to beat the game solo. Frozen Orb is your main attack and does decent damage throughout the game, you can also shoot it and then run, which is helpful for survival. Blizzard is better damage wise than Frozen Orb but more point hungry, so not as great as a hybrid build.
Hydra is decent for fire. Fireball is the best alternative, but it's also Hydra synergy, so I usually start as Fireball sorc until 30, then switch to Frozen Orb and when that is maxed I put my stuff into Hydra. Don't forget to put 1 point into Static Field and Teleport.
Playstyle is as following:
You kill everything not cold immune with Orb no problem and run/teleport past the rest. If there is a cold immune monster that NEEDS to be killed (e.g. act 3 council, act 4 sigil bosses, ancients), use Static Field+Hydra for it. If it is cold/fire immune, restart the game. Your Hydra in the hybrid build is not good enough to efficiently farm stuff, it's just to kill things that MUST be killed.
As a sorc, Hell mode is mostly skipping shit with Teleport to get to the good spots and just kill the stuff that is really good or necessary. Don't farm random ass backwater dungeons. Just teleport to the act boss and move on.
Lightning is also very powerful, but only with GG gear. You need specific resistance pierce equipment, which is extraordinarily rare/expensive. Sunder charm can help together with cheaper pierce gear like Crescent Moon runeword. Resistances pierced by sunder charm are still 95%, so you need other -res pieces to make it worthwhile or it will still take years to off those mobs. Don't play lightning without at least adequate gear.
Best course of action after beating the game is respeccing into full Blizzard and use the char to farm Andariel/Mephisto/terror zones to aquire better gear for your char roster. Blizzard is also a good general farmer with sunder charm because of the frost mastery. It is only 20% effective against formerly immune mobs, but that's enough paired with the brutal Blizzard damage to maintain a tolerable killspeed in endgame zones (Chaos Sanctuary, Throne of Destruction, terror zones).
