Dungeons

Gohmaracas is the boss of Lost Swamp.

1F Skip

Power Glove

If you have Cane of Somaria, it’s faster to use that instead of the crate, and it also removes the need for fire/explosives.

If you want to collect the Purple Chest as well:

Slab

There are many different ways of skipping 1F using the slab by pushing it to the right, then down.
All you need is something to push the slab from a distance, or something that allows you to reach the slab.
You can do it with Hover Boots, Hookshot, Bow, Boomerang, Deku Leaf, Cane of Somaria, Spear Strafe, etc.

2F Skip

There are no relevant 2F skips in the latest patch.
The ones listed were important for their respective versions.

Slab Knockback

Exclusive to version 1.0.0 and 1.0.1.

See Slab 1F Skip for various methods of getting the slab into position.

Hookshot Displacement

Exclusive to version 1.0.

See Slab 1F Skip for various methods of getting the slab into position.