Improvement of the game's fun factor, Game difficulty adjustment, Others. — FORTRESS DEFENDER Steam update #271836

Improvement of the game's fun factor: Addition of boss attack methods (stage2 and stage8) Missile scattering attack while activating special attack in TYPE2 Improved special attack bombs in TYPE3 to eliminate bullets and shoot continuously. Game difficulty adjustment: Medium-sized enemies on the first page will leave the game after a certain amount of time. Others: Changed sound effects (explosive bombs, enemy lasers)