Apologies for a late reply! Thank you for playing our game, we are happy that you liked it ^_^
Getting lost in the level was one of our top concerns as well, we tried to alleviate it a little bit by adding different light colors to some rooms but it was a very temporary solution. With a larger level we plan to introduce a more robust solution for that (probably either a map or making each room distinct and memorable enough to auto-remember the entire room layout).
In the next iteration the rooms interiors and overall general level layout will be more complex, as well as we will add more enemies with more complex behavior so there will be more strategic decisions to make while exploring. There is also the topic of resource management, with a small inventory, maybe some kind of ammunition, which should also increase the survival and strategy aspect of the game.