Hardcore farmers Prestige every 20 levels, not at 100. This "cheats" the system into infinite free tools.

If you have the skill, Hardcore mode significantly increases your payout and XP gains, though failing a single prestige objective means failing the entire campaign. Map Knowledge:

: Aim for challenges like "High in Fiber" (25 Leader kills with Fiber Wire) or "Natural Selection" (10 Leader kills with natural poisons) for 4,000 XP rewards. Location Mastery

the remaining addresses, right-click, and change the value to your desired amount.

The "Island" map (Mendoza) is widely considered the easiest map to "Crash the Party" (eliminate all 4 Syndicate Leaders on one map).