Woowww so stressful omg xD I was very freaked out by arrows coming from unknown places... I don't think I'll ever see tower defense games the same way again lmao.
Very polished entry :-) Didn't go past level 3, but I really enjoyed the concept and the feeling of the game. Like some others said, it's maybe a bit frustrating to not keep our upgrades from level to level, but I guess that would make it harder to balance (because you could have very fast yetis x)).
Also, I really loved the little illustrations! <3