Felix is able to break free of the claw attack and make his own counter attack hitting the creature for 2 HP damage! He is also evading to try and avoid the inevitable attack by the creature.
Grin fires two crossbow bolts, but both sail wide of the target, doing no damage.
Brewner moves into range and takes a swing with his mighty hammer, but misses with his attack.
Oliver, on the other hand, successfully lands both of his sling shots.
The creature tries to grab Felix again, and then paralyze him with a tentacle attack. (The tentacles will do no damage, but will paralyze if a Test save is failed.)
OK, I need a quick 1d6 roll from Felix for his Evade roll. If he succeeds, then he avoids the claw attack entirely. If he fails, he is held (and can try to break free again next turn). Either way, the tentacle attack failed.
The chuul is not looking to hot right now. It has taken a lot of damage and might have realized too late that it should have run away ...
Rolls
Chuul Grabbing Felix with claw attack DC:5 - Adv - (3d6)
(454) = 13
Check DC:5 - Basic - (2d6)
(42) = 6