After the completion of every chapter in The Walking Dead: Assault, there will be a chance where you can upgrade your skills by trading the exact amount of supplies needed.
You can instantly upgrade these skills fully by trading 550 supplies.
After fully upgrading a skill rewards will be unlocked, All of these rewards can be unlocked by trading 350 supplies.
Explosive Flares - Flares are disruptive materials that attracts walkers that are in groups and in herds. The disadvantage of the flares is that it increases the chance of a herd formation.
Cost: 20 Supplies
Pack of 5 Bandages - Bandages are crucial for the survival of the chosen survivors to your party, These restorative items are used to replenish lost health.
Cost: 150 Supplies
Ammo Pack - Extra ammunition upon initial depletion.
Cost: 40 Supplies
Each time an upgrade is done the amount of supplies needed for the next upgrade increases.
There are four options for an upgrade:
- Ammo Capacity
Upon fully upgrading your Ammo Capacity, Damage, Health, and Adrenaline, Rewards will be unlocked similar to the bonus objectives.
Purchasing items also gets a corresponding reward.
The following are the images unlocked as rewards.