Complex sentence: After being defeated by Blue Swallow as she barely regains her sight and then blasted by the Smash Bomber, the enlarged monster was destroyed by the Jet Icarus through the Tetra Buster.
Split into simpler sentences: After being defeated by Blue Swallow as she barely regains her sight and then blasted by the Smash Bomber. This monster was enlarged monster and was destroyed by the Jet Icarus through the Tetra Buster.