Difference between normal and hard

[Local_shower_shitter_jr.]

I want to know the difference between normal and hard, i legit see no difference between the 2

[jakubfuntal1]

The only difference I see is that the checkpoints in the levels are gone , if you play hard mode you can sometimes find dents in the wall with nothing in them , in normal mode there would be checkpoints in them . hope that helps

[AWillToLive]

The zombies (or ahem, "INFECTED") are a bit more faster and deal a tad bit more damage, basically, everything is a bit faster, react faster, and deal damage more