I know this game was launched on both PS2 and PC, and I was wondering if there is native controller support for the PC version. I don't see any option to enable controller or joystick support in the launcher or in-game options.

Does anyone have any success with enabling controller support; whether its in-game settings, or through a third party application like xpadder?

Someone here says that it works fine with xpadder - https://steamcommunity.com/app/275570/discussions/0/540735426874336548/

Works fine with xpadder. Logitech f710/X360 controller/Xbox One controller. All tested by me and Summoner works pretty ok. Had a little trouble configuring it but otherwise it's great. Good game for tv/couch gaming, hence the fact that it's a ps2 launch title and Summoner 2 is console only.