i cant be asked to read all 45 pages, can i?
so some basic progressive achievements:
-kill X zombies:
[generic zombie killer: 10, experienced zombie killer: 100, professional zombie killer: 1000, what did these zombies do to you?: 10000]
-kill X skeletons:
[keep 'em dead: 10, keep 'em redead: 100, poor skeletons: 1000, Tim, where are you?: 10000]
-kill X monsters(generic):
[monster hunter: 1000, they killed you, that one time...: 10000, OVERKILL: 100000]
-kill X bosses (requires repeating bosses):
[aren't there bigger ones?: 15, try killing them at once: 30]
-kill X simultaneous bosses:
[one wasn't enough: 2, is that all?: 4, this is too good!: 6]
hope you like 'em