You need KickStart ROM images at the very minimum if you want to play games, preferably KS1.3. Since you only have a machine with KS2.05 you will need to follow the instructions to rip your rom image and transfer it to the PC. If you want to use a modern Workbench then you are missing a whole bunch of stuff and I would recomend AmigaForever, at least the cheap download version.
