Listen Mode Distance is a three-level Survival upgrade that lets Joel pick up enemies with Listen Mode from farther away. It is the cheapest upgrade to start, so it is a common first buy for stealth players.
A wider radius means you see patrol routes and sleeping clickers before you walk into them, which saves shivs and ammo.
Crafting Speed
Cuts the time Joel takes to craft items from his backpack.
Healing Speed
Lets Joel apply health kits faster.
Maximum Health
Raises Joel's maximum health. Buying a level while hurt also refills his health completely.
Shiv Master
Level 1 lets Joel stab a clicker that grabs him if he has a shiv. Level 2 stops a full-durability shiv from breaking when used this way.