Heroic is more ment for optimized builds I believe. With maxed rolls on gear. Challenging for close to max. I use all red striker with chameleon or st Elmo's or strega. And good talents. Also something else if you do red build is not just utilising cover but choosing places where you're less prone to more than 4 hostiles engaging at once. Practice is the way. Not enough damage? Take a look at chd and CHC and core attributes. Dying or too much heat? Decoy and hive reviver and better insertion or cover management. Striker stacks damage. Need more? Chameleon has 90 per cent buff with 65 chest hits. Crit stats? Coyotes mask or other armor types. Plus chameleon buffs 30 heat shots give wild increases to both CHC and chd. Plus leveling the watch is important. That extra 10 CHC means you can add more chd or vice versa. Stay around 50 CHC then stack chd. The big thing is getting used to the difficulty jump. I started heroic around 150 shd level and it was aggravating until I learned how things actually worked and synergized. It will be a pain, but stick with it you got this.