Oddworld: Stranger's Wrath HD

Story-related. Cannot be missed.
Sekto is inside a large machine powered by two circular generators. The building is starting to collapse so large pieces of debris will fall from the ceiling. Use this debris as cover from Sekto’s laser blasts and shoot at the generators. Use whatever ammo you have left, although Boombats and Riotslugs will work best.

After a couple of shots Sekto will then fire a powerful laser beam which will destroy the debris you were hiding behind. Afterwards the laser will power down, allowing you time to collect more ammo (if needed) and more importantly time to run to another block of debris that has fallen. Do not get caught in Sekto’s laser beam as it can drain all of your health with a single shot.

Once you have destroyed both generators, Sekto’s machine will fall apart and the boss himself will be defeated.