Gilgamesh prays to glorious Shamash with tears in his eyes.
Shamash vs Humbaba
Gilgamesh cuts the branches
Gilgamesh had prayed to Shamash. Shamash sent him this way but now Gilgamesh doesn't know the way out. Glorious Shamash heard him and summoned all the winds, the north wind, the whirlwind, the storm and the icy wind, the tempest and the scorching wind.
Humbaba begs to Gilgamesh and Enkidu to keep him alive
The sun-god Shamash uses the winds to rise against Humbaba, they beat his eyes; he was gripped, unable to go forward or back.
Humbaba gets slayed by Gilgamesh and Enkidu
They felled seven cedars and cut and bound the branches and laid them at the foot of the mountain, and seven times Humbaba loosed his glory on them.
Enlil curses Gilgamesh and Enkidu for slaying Humbaba
Humbaba said "Gilgamesh, let me speak. I have never known a mother, no, nor a father who reared me. I was born of the mountain, he reared me, and Enlil made me the keeper of this forest. Let me go free, Gilgamesh, andthat I tended on the mountain shall be yours. I will cut them down and build you a palace.”
In the story, Gilgamesh struck first, then Enkidu at the second blow. On the third blow, Humbaba fell. During this he is suprisingly not injured or attacked.
When he saw the head of Humbaba, Enlil raged at them for doing it. Humbaba was the keeper of the forest.