Interesting start to your game, but definitely feels a little rough around the edges. Nice work creating a game in not your native language -- but you do still have some parts that never got translated and some typos that go beyond translation issues that you'll want to take a look at.
I'm not sure why there are both on-screen AND random encounters, but the random encounters make me not want to explore off the intended path because they are so frequent (and the super healer is incredibly annoying before you have a second party member, since it heals for 2+ turns of damage from Skelly, a seemingly unlimited number of times. ).
I also unfortunately didn't get a chance to complete this because when I activated the invisible man's powers to go through the spikes, his shadow disappears for some reason and it's impossible to tell where the player sprite is, so I got a game over and hadn't saved, so I'd be forced to start the game completely over, which is never enjoyable for the player.
You have a solid start here and the fights, although numerous and repetitive, seem decently balanced, but you just want to continue fine-tuning things to make it feel more complete for the player. Thanks for sharing your game with us!