The rope swinging reminds me of the ninja rope in the old Worms games, it works mostly the same.
The game is more or less a time trial/racing/speed running game, the game should have an option to turn off the tim limit completley, or the store description should be updated.
Is the button sequence in the lake supposed to be trial-and-error, or is there a hint there? I spent 4-5 minutes trying before i gave up. I got the 3 first buttons.
All in all, a fun and simple game, although i'm not the biggest fan of time trials.