All those tileset are great, but characters are so small in comparison to tiles, like half size a door and chest looks gigantic. Noted that too in the zombie packs too, is there a workaround or have I to modified them?
Yes, this is a deliberate design choice, and it’s up to you whether you prefer it or not. You can always adjust the scale of the character or tiles, but there’s no quick workaround — it’s intended to look this way.