You shouldn't have to wait for the Santas to go fully dead before you can charge them. If I want to charge them slightly early to keep the shop running smoothly, let me.
This is a good game, I enjoyed it a lot. It all seems quite neat and I had very few problems. I very much like how annoyed the mammoth looks when I hit him with my cowakazi, i think that made my day. However, I don't like how you're told about the special cows every time, maybe after two or three times you should make it stop or add a 'don't show this again' button, or something. I also found the holy cow thing is a bit messed up, {all_in_curly_brackets_and_underscores}; should probably take a look at that. Good work, though.
I like the game, though I think there's a couple of things I'd do differently. For example, I try to save my potions to the end where I'm more likely to need them, so I don't waste all of my lives. If when doing this, and I'm short of time, I feel it's unfair that I fail a level because I've gotten rid of all the blocks but left the potion and fail the level. I think rather than subjecting the player to this kind of punishment, you could introduce some kind of bonus for managing to complete the level without its help. Also, I don't see why, while again under time pressure, I cannot collapse bricks which are in completely unrelated parts of the screen just because a couple of bricks are falling somewhere else. Just a couple of points to consider.
I think you should have to click on the player when trying to intercept. It's annoying when I go to lower my work rate and the pass misses me because I don't realise what's going on.
It's my first game, just so I don't no how I can make it ! Sorry ! But I work on it !