This modpack heavily relies on the invasion mod.You can use tech magic and lots and lots off different Weapons and Vehicles to defend your Nexus.
It`s Mainly designed to be used on servers ore on sessions with friends but if you want to callenge yourself you can also play alone.
Waves of mobs that wil become bigger and stronger over time can you defend yourself ?
You can try out fighting by hand ore put down turrets and traps and so on .
With lots of tech and magic mods you can also build a pretty strong defens before you activate the nexus.
Have fun!