Remove injury slowdown

[Fuzzy 'Mc-Cones' Mcnomnoms]

Many of the zombies are already quite fast or have the ability to slow you down. It's already hard enough to get away from them if you're caught by them, getting hit slows you down to a point where it's nearly impossible to get away. Removing the movement penalty from getting hurt, or perhaps limiting it to below ~30% hp makes it a lot easier for survivors to get away while not making it too much harder for zombies.

[The Black Parade]

Maybe add a perk where you wont slowdown when damaged

[Terran]

Make shooting zombies slow them down or give them a tiny bit of knockback. So even low-damage weapons can help you, say, escape.

Also, there should be easier ways to kill zombies without just gunning them down; better proximity mines maybe. I bought a prox mine for the same price as a shotgun, and it did 120 damage to a normal zombie. That was it. 35 credits down the drain.