Arcrypt

Easy ArchLinux install with full-disk encryption.

After you have an Arch ISO Installed onto a USB drive, boot up to it and see the Installation Guide on how to get started.
Utils like wifi-menu will probably be handy.

Once you get to the partitioning steps, use arcrypt; download it like this:

wget git.io/arcrypt.sh
chmod +x arcrypt.sh

Arcrypt format will setup a device with full-disk encryption. This erases the entire drive, so be sure to have the correct one before continuing! Use lsblk to help identify the correct device.

./arcrypt.sh format /dev/sdX

Once you answer some questions, it will do most of the steps in the install guide.

This will leave you with a drive partitioned like this:

NAME                  MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda                   8:0      0   200G  0 disk
├─sda1                8:1      0     1M  0 part
├─sda2                8:2      0   550M  0 part  /efi
├─sda3                8:3      0   200M  0 part
│ └─cryptboot         254:0    0   198M  0 crypt /boot
└─sda4                8:4      0   100G  0 part
  └─cryptlvm          254:1    0   100G  0 crypt
    ├─Arcrypt-swap    254:2    0    16G  0 lvm   [SWAP]
    └─Arcrypt-root    254:3    0 183.2G  0 lvm   /

If you need to mount again in the future use ./arcrypt.sh mount /dev/sdX