Why am I missing some points

Hint 1 of 6:

Did you kill Orat and the spider droid separately?

Hint 2 of 6:

Did you talk to the first Sarien guard?

Hint 3 of 6:

Did you say you played KQ3 to the other guard? (Better not lie!)

Hint 4 of 6:

Did you shoot lots of Sarien guards with the ray gun?

Hint 5 of 6:

Did you figure out the use of the yucky plant leaf? (I never did.)