Here is the full list of all 50 Rusty Lake Paradise achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Dead of the Firstborn - 4
Dead of the Firstborn - 3
Death of the Firstborn - 5
Darkness - 5
Diseased Livestock - 4
Diseased Livestock - 1
Flies - 5
Flies - 4
Flies - 3
Lice & Gnats - 4
Lice & Gnats - 3
Lice & Gnats - 5
Frogs - 5
Frogs - 3
Frogs - 4
Water Turns Into Blood - 4
Water Turns Into Blood - 5
Dead of the Firstborn - 2
Dead of the Firstborn - 1
Darkness - 4
Darkness - 1
Darkness - 3
Darkness - 2
Locusts - 3
Locusts - 5
Locusts - 4
Locusts - 2
Locusts - 1
Hail - 5
Hail - 2
Hail - 3
Hail - 1
Hail - 4
Boils - 2
Boils - 4
Boils - 3
Boils - 5
Boils - 1
Diseased Livestock - 5
Diseased Livestock - 2
Diseased Livestock - 3
Flies - 2
Flies - 1
Lice & Gnats - 1
Lice & Gnats - 2
Frogs - 2
Frogs - 1
Water Turns Into Blood - 3
Water Turns Into Blood - 2
Water Turns Into Blood - 1