Very silly barrel character! I like them :)
Exploring the unknown tiles is interesting, but besides avoiding spikes once you see them (and memorizing the maps), survival kind of feels out of the player's control which makes the game seem less fun to me. I think I'd prefer if there was some way to strategize your movements to avoid the spikes rather than blindly walking into them (maybe they're timed for example and poke up an down every other turn for example).
Might also be easier if the camera was a little bit more top-down. It can be hard to see the tiles behind pillars sometimes!