DOOM Eternal: 12 Tips & Tricks The Game Doesn't Tell You

11. Combine Ice & Flame To Refill Health & Armour Together

Quickly you'll realise the power of constantly dousing foes in the Flame Belch. It means enemies bleed armour pickups, you can shoot them while on fire for more, and if they die while on fire, you get a bigger explosion of armour tokens altogether.

However, even better is to upgrade your Praetor Suit's "Ice Bomb" category so that frozen enemies drop health when shot.

Simply throw an ice bomb into a crowd of enemies, then set fire to them all, then detonate using a grenade or other explosive and you'll refill both meters simultaneously.

Chainsaw one amongst the fray on the way out and that's all your ammo topped up, too.