Genius! Only thing missing was one of the secrets, there's no run button so it would probably be unattainable anyway, but there's a secret on e1m1 ... spoiler...
You go to the exit, which lowers the balcony (where you can get the beer, and there's an image of someone I don't recognise), but if you then go back over the water to that room, wait 10 seconds or so, then sprint back to the beer room, an elevator appears briefly. Perhaps you could put the mysterious gin in it?