Good news, everyone and thanks for your feedback! Demo just got major update So, here is patch note:
* fixed dsplay on different resolutions (like 3440x1440 and 1024x768)
* added mana fountain near the first magic stone - so you wont stuck if you spent all you mana
* fixed mushroom boss battle - more mushrooms added, but explosion hitboxes now more correct
* gerbera (evil plant, you know) wont shoot after destruction
* gerbera projectiles wont damage you after the actual explosion
* horizontal slime hitbox now dissappear after their death
* some witchy animation fixes (last but actually the most major update)