i completed that game a while back. unfortunately the game is very flawed imo:

• you must beat the game in one seating as the dev didn't bother to implement a save/load feature. then again it took me 30 minutes to an hour to beat it so justified? idk
• 99.9% of the health pickups found in the game heal you by only a measly 1 HP. there's only like, 2 health pickups i've found throughout the game that heals you more than that.
• later levels rely greatly on just fucking zerg rushing the player. you'll be forced to huddle in rooms and lure enemies so you don't end up dying.
• the enemies (terfs obv) speak some other language than english. disappointing, since i figured the birthplace of the english language wholly embraced the terf ideology, thus making a perfect setting.
• the ending felt disappointing imo. you exit the concentration camp and... it just ends. nothing like the "YEAH!" scene from wolf3d. hell, no post-game story dialogue either. it just goes back to the main menu.