Down in the nailgun trap, the last nailgun has a different colour and don't shoot. Push it, and a secret door in the ramp opens. Watch your butt when you go past the shooters.

After the steel bars are drawn, and you're down the shaft, there is a pillar with four "death" stained glass windows on it. The textures is reversed on one window. Shoot it, it opens. Goodie inside.

In this room, jump from block to block - you can spiral your way up to a goodie. If this is troublesome, don't go into farming. You'll just get dizzy rotating the crops.

Push the button to extend the drawbridge. Then jump into the...er, water, and dive into the hole on the right. Goodie awaits. And you'll probably have clean toenails again.