"To restore your life, press the Recover batoon in the character menu."
1. You gets keys for the Lab at levels 28, 38, 48, and 58. If you check the AH, you'll see people selling the 58 level ones for a few million. Don't forget to keep in mind what the level cap is. :V
It picks bosses that you've likely encountered by then. They don't beef up at all other than the usual method of # of party members. It's basically just one boss after another with no stage in between. You get the chance to beat up thirty different bosses, and after every ten, they give you an option to quit. You, naturally get seals for winning, and after the first ten, you get one seal, the second ten, 6 seals, and I don't know how many for a full clear.
2. That's exactly how you get it. And you get soul stones by having taken over crystals (you should be getting soul stones now if you're logged in.) Basically, you don't have to worry about gathering it. Just be online whenever CANAAN, FOX, or White are online (effing Asen.)
3. umm ... what? I'm level 33 right now, what are you talking about?