code:
Skill Menu name Source code Thing placement Ammo Special
1 I'm too young to die sk_baby The same as in sk_easy Double Players take half normal damage
2 Hey, not too rough sk_easy Least numbers or strength Normal
3 Hurt me plenty sk_medium Default numbers or strength Normal Used unless otherwise defined by the user
4 Ultra-Violence sk_hard Greatest numbers or strength Normal
5 Nightmare! sk_nightmare The same as in sk_hard Double No cheats4, fast5 and respawning monsters