Low-Tier Arsenal Buff: Slightly increased FMJ (Full Metal Jacket) damage for early-game weaponry to improve viability against armored targets.
High-Tier Arsenal Tuning: Slightly decreased HP (Hollow Point) damage for late-game weaponry to prevent excessive one-shot potential.
CQB Lethality: Global adjustment to increase accuracy in Close Quarters Battle (under 10 tiles) for all weapons.
Source: Steam Community (opens in a new tab)