I really enjoyed this game, for a game made in 48 hours this is quite impressive.
the fact that you had to discover the tiles as you went along was really entertaining
at first, but I think the fact that the map is for the most part static is hurting the game abit, after 2-3 times playing it you now where the important stuff is. But I think the main idea is quite promising, I hope you'll continue to improve this project, as it could really benefit just being polished a bit.
Here's a bit of my gameplay experience: