Use portal
use_portal88.1%
Loading game…
Achievements and their recorded unlock rates.
Loading your Steam progress…
use_portalcomplete_chapter_0death_1kowalski_analysisjump_0out_of_spacetime_deathcomplete_chapter_1death_2speed_recordcomplete_chapter_2complete_chapter_3complete_chapter_5complete_chapter_4jump_1game_completecomplete_chapter_6complete_chapter_7alarm_rushold_schooldebug_paneldeath_3master_level_chapter_1master_level_chapter_3master_level_chapter_2master_level_chapter_4chapter_stealthmaster_of_masters