This is very odd game.
On one hand, this is a modern platform game, with (very pretty) 3d graphics, online leaderboards and it's own unique little twists on on the genre.
On the other hand, this is a retro platform game, with a story and setting like something out of the 80s or 90s, and the cheesyness of that era is played dead straight, not the slightest bit self aware or toung in cheek.
To play this game is to step into a strange alternate world, where games matured technologically but remained exactly the same mentally. On that alone I'd say the game is worth playing, it's very much unique in how odd it is.
Unfortunatly, while I think the game is worth checking out on WTF factor alone. I can't really say whether the game is actually good or not. Personally, I find it to be a very fun platform game, but it's mix of old and new is so weird that I can just as easily see people being put off by it as I can see them liking it.
This is very much a "love it or hate it" deal.