Need to know before buying

This is one of the best games I've bought off Steam in a while! The music is incredible, the graphics are well done, and I love how the game gradually upgrades as you go on! ( I enjoy games like that, I'm also a fan of DLC Quest and I have no problems with buying games like these to support Indie Developers ) Why does there seem to be so much hate for it? People seem to be so ♥♥♥♥ed off about it for some reason....

As the title says, I'm experiencing almost 2 full seconds of lag from button press to reaction with the deck. disabled the framerate limit and tried it while plugged in and it made no difference

I have all the Steam achievements, and I also got the in-game achievement for having all the equipment in the Diablo-like area. Only I can think of is maybe levelling up. My level was 13 when the credits rolled. Anyone have a different level with everything else done to confirm this? I kinda don't want to grind out the level and beat the final boss again to check, hah. Thanks!...

When I try to play the game it doesn't detect my XBox 360 gamepad. When I go to the options menu and try to select it, I get a #1006 error. Is there any way I can get my controller to work?