Thank you!
Sound effects are on top of the long list of post jam updates along with the missions/campaign which were all cut due to time.
I though since the attack deal damage at the end of the animation (giant eye enemy) or when the enemy missile hit the play (enemy 2) the player had enough time to "see" the attack and have enough time to block it. Same thing about the enemy blocks.
Maybe an increase of the animation could do the trick... The sound effect could help here.