It's gamepad or keyboard only?

No mouse support

Keyboard, you use wasd to move, and also to navigate the menus. Spacebar to use etc, feels pretty decent on a keyboard so far, but I might dig up a controller just to be more cozy.

what a shitty port, it should be warned on the gog game page
let I go uninstall

I am the same typically, but this game really doesn't need a mouse for anything.
This plays like an SNES game, like Final Fantasy VI. You typically zoom through menus using up down in turn based combat, and then you use wasd to walk around.

Finish the prologue and you'll see what I mean. It was also made on PC first so not a bad port.

I never played SNES, so I didn't felt the AI intuitive.
I may play mouse-less PC games, but they have to really be simple, not feeling consolized games,
so I however like Jupiter Hell

It's actually really smooth on keyboard. Just holding wasd to move and hitting spacebar to interact or select, I started with controller to relax but it's better with keyboard. GL