All roads lead to Rome, but why should you do it the hard way? It can be quite difficult (for the first time) to correctly format and unzip the ArchLinux image manually for the Raspberry. For example when you have an 32 GB SD I can assure you that you probably won’t have all the effective storage. The way to go is unmounting your SD, split it into the correct partitions layouts for ArchLinux (FAT, EXT4, SWAP) and then put the correct files on it. If you like the commandline, like I do, go ahead, but if not there is an easy tool called NOOBS (New Out Of Box Software).
Download the tool here: