Hi man, thanks! I made this a veeeery long time ago, the kickdrum isn't even made by me, my style has evolved soo much since this haha.

Well, the advice i can give you now is to try out CamelPhat3, Ohmicide, and Devastator for hardcore kicks. To make the main sample I use MicroTonic, or, in more recent times (mostly because MicroTonic doesn't work properly on my new computer) a combination of different synths, like Harmor and KICK (a kickdrum synthesizer by Sonic Academy).

For leads and such, try out Sylenth1, it's simple and easy to use, yet you can get som pretty sweet sounds out of it! :)

Although I rarely produce any Hardcore Techno these days, I hope this was to your help! :)
Here's a link to my old SoundCloud account ff you want to check out some of my later Hardcore Techno tracks! https://soundcloud.com/neoprospect

Cheers mate!