Complete solution with answer and video walkthrough
They must protect Alyx while she charges up the Horn
Use Thor to stop the thunder attack. Use the Bulk to stop the 2nd attack. Drag them on the projectiles. Use Spiderdude to web him.

This level challenges your problem-solving skills with a unique puzzle. Take your time to observe all elements on the screen. Sometimes the solution requires thinking outside the box or interacting with objects in unexpected ways. If you're stuck, try different approaches and don't be afraid to experiment with the interface.

Mary must release the prisoners

Alyx's dad must return home and rest

They are surrounded

Gundolf Puzzle. Fix the image

The Horn is charged up, time to attack

Alyx must overcome Loki's power

While Alyx was fighting Loki, the others were busy with his minions

Gundolf Puzzle. Put the correct alchemy formulas