Digimon Story: Cyber Sleuth - Hacker's Memory

Another Digimon that requires multiple steps HOWEVER this one is much less complicated than Chaosmon and Chaosmon VA. You need to be at least in chapter 9, as you need 2 of story-based items that are dropped from the boss at the end of chapter 8: the Human Spirit of Fire for Agumon and the Human Spirit of Light for Gabumon. Because these are required I won't be listing it in the lower portion of the guide but you will need them for the whole process. I also suggest your ABI on Magna and Kaiser is maxed at 200 before you make Susanomon so that it has the best possible stats .
Like with the Chaosmons this is just the method I used and not the only route but is the "cannon" route.

Part 1: Rookie to Champion
Digivolve Agumon into Agunimon when it has these stats:
Level 15+
HP 150+
ATK 50+

Digivolve Gabumon into Lobomon when it has these stats:
Level 15+
HP 45+
SPD 55+

Part 2: Champion to Ultimate
Digivolve Agunimon into BurningGreymon when it has these stats:
Level 30+
HP 500+
ATK 120+
DEF 60+

Digivolve Lobomon into KendoGarurumon when it has these stats:
Level 30+
HP 300+
ATK 100+
SPD 85+

Part 3: Ultimate to Mega
Digivolve BurningGreymon into KaiserGreymon when it has these stats:
Level 55+
HP 1500+
ATK 150+
DEF 120+
ABI 20+
CAM: 80%+

Digivolve KendoGarurumon into MagnaGarurumon when it has these stats:
Level 50+
ATK130+
SPD 160+
ABI 20+
CAM 80%+

Part 4: Mega to Ultra
DNA Digivolve KaiserGreymon and MagnaGarurumon into Susanomon when they have these stats:
Level 60+
HP 1000+
ATK 150+
INT 150+
ABI 100,
CAM 100%

The trophy should pop now.