If you liked the God of Thunder level (the one on the boat), you'll love this one. Why? Because it's pretty much the same level, only that you have the mighty Thor's Hammer with you this time. Remember to equip it (use R a few times) and to use it, hold right click (to lock on) and then use normal click to shoot the thunder bolt (you can do this without targetting too). You can also use E while holding right click to do damage to all nearby enemies, very useful when you're surrounded and also to break all nearby jars.
Learn how to use it since that's going to be the only weapon you'll use for the rest of the game - pretty much because it's the most powerful weapon in the game.
Just follow the same path like before and kill everyon in your path.
Use the containers to get to the upper level .. again.
Time to go down ... yes, again.
Enjoy the cinematic and get ready for a more serious level.