It's a mixture of dieselpunk and steampunk. It's a post-apocalyptic world with technology but they fight with spears and musket, something like medieval napoleonic.

For example they have a spear but the spear is electric. The musket has some kind of futuristic laser energy shooting. The armors are medieval. Usually the landscape is desert or forest. There are feuds, kings, peasants and all that like in the medieval times.

I think is something ended in -punk.

Thanks in advance!

Edit: It's close to Renaissance-punk and Gunpowder fantasy, but not quite what I mean. It's more medieval than renaissance, you still have chivalry, knights, princess... but mixed with a bit of technology. It's also closer to dieselpunk than to steampunk. Technology is usually savaged or handmade from scrap

Edit 2: This artstation is what I wan't to know the name of! https://www.artstation.com/artwork/EVmRPe