I disagree, and I will try to explain it in a reasoned way.
1- The game is inspired by Atic Atac, respecting its essence and mechanics deeply. It's like reliving that game 40 years later, in 3D style, with beautiful music and a really wonderful art style. And adding, in a very inspired way, new game modes. It would be meaningless without the frenetic pace, opening and closing doors, constant appearance of enemies, life drainage, etc.
2- The map is available on the consoles. There are 5 floors, and you have one map per floor. When you have discovered a complete floor, take a picture of it with your mobile phone (or a screenshot) and you have maps forever, if you wish so. Other players prefer to play without a map.
3- I don't think it's a hardcore game, not even close. My son, who had never seen a game like this before, saw it on Monday and immediately asked me to install it for him. He played two test games with Stamperlot, understood the objective perfectly, and the next game he won the game in 17 minutes (Andrew13 at the score table). I was surprised how well he knew the map after a few games, and he was more familiar with the main paths than I was. He made one more comment: Dad, it's too easy to refill the life bar, there's food everywhere.
After that, he won it twice with Lester (one of them didn't enter due to server error) and once with Zouch (was also not registered for the same reason). And although he usually plays Fortnite and League of Legends, he also loves Melkhior's Mansion.
So, as you can see, for some it is easy, for others it is hard. You have to ask yourself whether you really like it or not, it won't suit all players. In my opinion it's a marvellous game, a gem. And on top of that, it's free.