Track the gun rather than only the player level

The developer describes skins as a per-gun kill reward. Keep that separate from leveling for weapons and equipment and challenges for attachments.

Game scenes from the trailer

Red-clad character holding a firearm beside a brick wall in Hood Warfare 2
Red-clad character holding a firearm beside a brick wall in Hood Warfare 2. Official trailer, 18s; promotional footage; exact game build unknown.

Choose a cosmetic goal without changing your whole routine

If you want to work toward a skin, record the relevant gun and the requirement shown in your game. As a general practice suggestion, use a weapon you are comfortable learning rather than sacrificing every objective just to pursue kills.

What a skin does not establish

The progression description does not establish a damage boost, rarity table, trading system or purchase method for skins. This guide makes no claim that a skin improves the weapon.