I'm sorry, making this game a mandatory exercise is a very poor game design decision. This will be the last game I buy from this company.
I think you're a newbie of videogames...if you define Machinarium as poor of game design. Do you have took a look around?
Otherwise maybe you like games "all gore no brain", considering you don't like the challenge and you've said "mandatory exercise".
So i tell you this: i've played a lot of games, some of these are considered milestones (Quake, Half-Life, Doom, Unreal,Diablo,Warcraft, WoW,etc,etc) and i have appreciated them very much, but we are talking about companies investing millions $.
Well, in my opinion Amanita has done a great job with few people and not so much $.
I'm not the defence attorney of Amanita, i just support a team which deserves it.