great! I didn't mean to make it that difficult. Sorry, once you learn the behavior of the aliens it's easy to dodge them. purge 1 and 2 are the same in objectives, 3 and 4 are different. The purge 2 the keys are spirals... it's as if it were a living or organic key... and also the map designed to disorient you... there are also cubes that move but in the form of bones... I advise you to use save state in the emulator haha thanks for trying again