Nice little game. Final score: 2965 :)
It took me 2-3 levels of figuring out what to do (and discovering I couldn't lose), but I enjoyed the 'sneak/positioning'-mechanic . I had the feeling that I was getting better in it over time. The different bugs with their different behaviors made the levels interesting. As did the frog storyline ;)
It did feel a little unfair at the moments where I had to 'turn' (in stead of immediately walk) to catch a bug. My character would then run into the bug and it would fly away.
But all in all: nice job.