If we consider each episode as chapters of a single game, as TT seems to be designing it, then it would be logical that the game gets progressively harder as next episodes arrive.
And I'm glad we have inventory combination as it's one thing that was missing from Sam & Max games.
I think TT is making a good job, especially as most puzzles are fairly logical, something you can't tell about most adventure games.
And no pixel hunting here, which is great. As least the difficulty is real and not because of bad design.
Monkeying around since 1990