Duke Nukem Forever
60 Achievements
1,205
25-31h
Heart to Heart
Finish Doctor Proton
20
How to unlock the Heart to Heart achievement in Duke Nukem Forever - Definitive Guide
You'll get this automatically when you beat Dr. Proton in the story. You'll also get the automatic ego boost.
To beat him, I found hiding behind the pillars when I got low on ego meant he couldn't hit me with anything, then popped out and blasted away with the Devastator. Keep an eye out for the pipe bomb icon and if you see it run to the next little platform bit.
After so much damage is taken, Proton will go and park in front of one of the four platforms in the corner and regenerate. Sprint over there and pull the flashing lever to release a security ball and stop his regeneration.
When he's down to half health he'll start to use a laser beam, just keep hidden behind the pillar and taking shots when you can.
Eventually he'll be run out of health and collapse, run up and perform the usual QTE to finish him off.
Story related and can't be missed.
Doctor Proton is an old nemesis of Duke and is the one who cloned the evil Dukes. As always, you'll need a Devastator or a Rocket Launcher in order to defeat the boss. There are two ammo crates in the room so make use of them when low on ammo. The Doctor mainly has only three attacks of a laser beam, chain gun and pipe bombing. Simply circle around him while shooting at either of his two weak points (the red circles). When he takes enough damage he'll run to one of the machine stations to regenerate his health. When this happens, run up to his station and flip the switch to have the balls explode causing him to stop regenerating his health. Rinse and repeat the dodging of his attacks, the shooting of his weak points, and flipping the switches until you've depleted his health meter and are prompted to "Finish him" by pressing the button and then repeatedly tap the button to break his head off the machine. Your trophy will unlock along with your Ego cap reward.