No feedback of any type?...
How to aboid the tedious and boring.If a racing game is not about destruction derby but has a desctruction derby mini game, but badly implemented, then that mini game will be tedious. Each part has to work well in itself and in the whole to be fun.
A part of a game becomes "repetitive" when the player does not find another challenge that the test of his patience.
A game should allways challenge the player in his skills and offer new challenges that match his newly aquired skills. A game should not just be a test of endurance or patience, that is not fun.
A player can endure a boring part without much protest only to get a reward, but if the player is obligated to go through that boring part too many times, it becomes repetitive.
When nothing happens, its boring, make something happen in the game, and only give time to relax after a very big time of stress.
Tell the player where to go if there are no clues, don't let him wander with no clue where to go or what to do. Give him objectives. Otherwise the feeling is of frustration and not knowing what to do or what is expected of him.
Some tutorials are horribly boring. The reasons may be too much to read and no interaction, no challenge, nothing to do or nothing interesting happening, too much information in a small amount of time, and so on.
There should allways be new elements and data coming to the player to keep him entertained, for example in a platformer, new enemies, new platforms, new characters, new places, new abilities like in metroid, new challenges, secrets, and so on.
This should present a new way to interact with the world, new input challenges in which the player must learn to control something new, and new ways to fight enemies, new powers, and so on.
Is any challenge a good challenge?.If you present a player with a challenge, that's not guarantee of motivation to play your game. Some players will take a challenge, others won't.
For example, some people love the challenge of Sudoku, others avoid such challenges as the plague.