Hello author, your game impressed me, but I encountered some difficulties while playing and couldn't find a breakthrough point. The first one is to determine which items can be used in the barrels control room and where to find it. The second one should be that floor0 has a water zone where the water is relatively deep and tools are needed to pass through, but where are the tools. The third one, where is the battery used? I have searched for many rooms but none of them are suitable. The fourth one is how to use the main elevator. Fifth, where is the generator room? I really haven't found it. There are relevant videos here, if you are interested, you can patiently watch them.
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I dont' really remember much about this game, since I never went back to it after making it (except for using Marion and Helga in A House for Alesa 3), so this information might not be 100% accure and I'd recommend to watch a completed playthrough to see those specific puzzles. But if I recall correctly:
-Bar control room: you need to imput a number painted in blood in the dinning area
-Water zone: after you activiate a switch in the barrel control room, barrels will allow you to get to the generator room
-The battery is used in the generator room
-In order to use the main elevator, you must activate the generator in the generator room
-The generator room is just across the area with water in floor 0