I've pretty much gotten all the achievements now, so I've been playing around in single player.
enable the console in the menu
start a new game, say expert on 'no mercy 1.'
~
sv_cheats 1
director_force_versus_start 1
director_no_human_zombies 0
kill
~
You're now going to respawn as infected. Use 'noclip' to get to where you want to go. Wait until your spawn meter starts, aim at where you want to spawn, then:
~
z_spawn tank
sv_cheats 0
~
You are now a tank, and the survivor bots are going to be trying to get to the exit. Have fun. You can throw rocks from on top of a building if you want. Kinda lame to get an achievement this way, so do it in versus mode first. If you're going for Lamb 2 Slaughter, you're going to have a more fiddly time of it. I don't think warping the survivors in and out of a safety room counts as prerequisites.
Other fun commands:
director_panic_forever 1
director_force_panic_event
z_common_limit 100
z_mega_mob_size 120
z_spawn_mob
warp_all_survivors_here
Make key bindings for smoother cheating.
enable the console in the menu
start a new game, say expert on 'no mercy 1.'
~
sv_cheats 1
director_force_versus_start 1
director_no_human_zombies 0
kill
~
You're now going to respawn as infected. Use 'noclip' to get to where you want to go. Wait until your spawn meter starts, aim at where you want to spawn, then:
~
z_spawn tank
sv_cheats 0
~
You are now a tank, and the survivor bots are going to be trying to get to the exit. Have fun. You can throw rocks from on top of a building if you want. Kinda lame to get an achievement this way, so do it in versus mode first. If you're going for Lamb 2 Slaughter, you're going to have a more fiddly time of it. I don't think warping the survivors in and out of a safety room counts as prerequisites.
Other fun commands:
director_panic_forever 1
director_force_panic_event
z_common_limit 100
z_mega_mob_size 120
z_spawn_mob
warp_all_survivors_here
Make key bindings for smoother cheating.