Mortal Shell

All shells are located in nooks and dead ends, look for holes and crawl into them.
The first shell is at the beginning of the swamp level, on the left. As you approach, the picture changes and different sounds are heard.
You will find 2 shells as you go through the levels to the bosses.
If you miss some shell: in the center of the swamp there is a tower with a merchant and a cat.
It has racks for changing weapons, as well as tombs in which shells should lie.
In place of the missing shell there will be a vision that will show how to get to the shell.
All shells except the first one are guarded by minibosses (ordinary opponents, but with a health bar and more aggressive), so be prepared.