This is a free, fun Xbox enabled Windows title. It's fun, pretty, and sounds nice. I'm enjoying it, and my kids like the llamas. Some of the achievements are grindy (lots of in-game time) but I'm enjoying it for now.
Yep, the distance achievements are in 1 sitting. And the llamas achievements are glitched beyond belief (frequent resets of ingame counter, counter not working at all, etc). The time related achievements do unlock, but also not when they're supposed to (much, much later).
On the bright side it's a fun little game just as long as you don't value completions (for this game will never be completed by anyone unless there's a patch).