for tallest snowman, you can’t just place wizard with the snowman skin on next to a random snowman. you need to put wizard in between the 3 specific snowmen you can find on a mountain somewhere
adding onto this, you can kill the gingerbread men in bustling bakery with any hero (except for lemonade cats, spectre, etc obviously) to activate overcooked
Snowball triggers when there is alot of friendly summons so it is possible solo and when you want it to spawn you can spam jester so that it spawns alot of weak things and soon snowball will trigger. (thats how i did it)
I’m not sure if you know or not, but there is a secret Golden Lil Chip if you keep on going in the Cookie Clicking Simulator-type thing. If you see Tinker appear after Lil Chip, then you’re probably close!