Complex sentence: Alak tells him to kill him since he was the one who was weak and he was not able to stop his mother, and even though Datak is impressed with Alak's response, he still kills one of the men in front of everyone's eyes.
Split into simpler sentences: Alak tells him to kill him since he was the one who was weak and he was not able to stop his mother. Even though Datak is impressed with Alak's response, he still kills one of the men in front of everyone's eyes.