For a 480p encode, this is decent. The "BluRay" source helps — colors (especially the gold/copper tones) remain watchable. However, action scenes with fast motion (e.g., Theseus fighting hyperion's army) show noticeable macroblocking and slight pixelation on larger screens. On a phone/tablet or old laptop, it's fine. "Extra Quality" here likely means a higher bitrate than typical 480p YIFY releases — file size is probably ~1.5–2.5GB.
Immortals (2011) is a stylized epic fantasy film directed by Tarsem Singh For a 480p encode, this is decent