Did one stage. shyt was intense as fukk but it feels like if you get the hang of the game you can really finesse and run smooth. The game has nice movement and isnt a game that requires patience. Youre literally just dodging and moving through hoards of demonic beasts.
The only way to get back your energy is to stun and melle because if youre relying on health packs, forget about it. This way the game encourages you to be constantly in the action because you will be taking damage. Theres just no way around it.