Yea, Hard is one thing. But this game is an unplayable mess, it has potential but currently it suffers from multiple issues.
First, RNGesus, you have to pray you start with a good start or you die in two goblin fights and need to restart. Even having multiple chests near by won't make it a good start as they could all be empty. Not to mention you could encounter multiple enemies BEFORE you even get to the chests and just die.
Second, Related to the first one, but chests are more likely to be empty so, good luck.
Third, If you DO get lucky and get a good start, the game could just lock onto a single button and continue to do that until you die, dodge doesn't work, or if you are super unlucky, the game dips down to like 30fps then no buttons work at all and you have to restart
Fourth, Enemies (goblins, on the first floor at least) could fluctuate in power wildly, fight one and it deals 10-20 per hit, fight another and it deals 60-70+ damage a hit. Add into it that there is no way to see the enemies before you encounter them and there is no way to run from combat, if you encounter an enemy you aren't ready for then it's just restart.