The Sentinel shrieked in fury, its six eyes glowing even brighter. Its gelatinous core began to ripple violently, and the creature's body started to collapse in on itself, forming a massive sphere of concentrated energy.
Bob's eyes widened. "It's going to detonate!"
Tunny quickly positioned himself in front of Bob, raising his blade-arm defensively. The Sentinel's energy core pulsed faster and faster until, with a deafening roar, it unleashed a massive shockwave of dark energy.
The force of the explosion sent Bob and Tunny hurtling backward. Bob slammed into a wall, the impact leaving him dazed and barely conscious.
Luckily Bob managed to get far away from him so it didn't bother him that much, otherwise he would have been dead.
[-75 HP]
Tunny, though severely injured, managed to stay on his feet, his towering form shielding Bob from Sentinel. His blade-arm was cracked, and his movements were slower, but his resolve remained unshaken.