To clear up a few questions for people, and such, here is a detailed guide to rushing in 1.10, INCLUDING getting thru Act 5, before doing ancients, enjoy
[Act 1]
Take waypoint to catacombs lvl 2, proceed to lvl 3, then lvl 4.
Send TP to leechers from catacombs lvl 4.
Kill Andarial.
Talk to warriv to move to act 2.
[Act 2]
Take waypoint to far oasis, proceed to maggot lair lvl1, then lvl 2, then lvl 3.
Kill maggot, open chest, send tp, for leechers to pick up staff.
Take waypoint to lost city, proceed to valley of snakes, then claw viper temple, then lvl2.
Kill Fangskin and all the rest in that room, send tp from middle of room, next to altar, for leechers to break.
From here, leechers talk to Atma, and drognan.
Take waypoint to arcane sanctuary, send tp to leechers BEFORE killing summoner.
Leechers then talk to Atma again.
Take waypoint to canyon of magi, proceed to true tomb of tal rasha, clear oriface room of all monsters, send tp to leechers.
All the leechers go in and wait, one puts a completed staff into oriface.
Kill Duriel, from here leechers talk to tyrael, then go to town, and talk to Jeryhn, and then Meshif to move to Act 3.
[Act 3]
Take waypoint to Travincal, clear out area behind (top right) of the entrance to the Durance of Hate.
All leechers sit at that clean tp, until ALL council members are killed, and quest 5 changes to "Ask Cain for help"
Then leechers return to town, and talk to Cain.
Take waypoint, to Durance of Hate lvl 2, proceed to lvl 3, and find a nice clean spot for a tp, and have the leecher come in and stay still.
Kill Mephisto, then have all leechers go thru your tp, and into the red portal leading to Act 4.
[Act 4]
Take waypoint to River of Flame, from here proceed to Chaos Sanctuary.
Clear out all the seals as you wish, and leave ONE unopened, create a tp in the middle of the chaos sanctuary, have one leecher come in, and hide in a corner directly above where Diablo will soon spawn.
Open the last seal, and kill Diablo.
Return to town, leechers talk to Tyrael, and proceed to act 5 via the red portal.
[Act 5]
Here is the part where many people do not understand how this works. So pay attention.
The leecher creates a PUBLIC baal run game, and joins the party with everyone else. But due to lvl requirements, won't be able to go into the Worldstone, right? right. BUT, if someone in your quest, in that game, still hasn't killed baal, and they DO while in YOUR game, in YOUR party, while you are in ACT 5, you WILL get the quest, and be able to move on to the next difficulty level.
So it is no hack, no secret program, allowing lvl 1 characters into hell. Enjoy!