I could tell you other ways about how to carve up a Demno army but that would take the fun out of your learning curve.
get some MV 5 MHMG vehicles and just crush them..
the demno guys run at a hard point bargain.. all are rel. expensive + hard.
but they do not really dish out..:
all chars: just CC (no sec attack, CC~9-10-11) or a pistol or a 1/turn FT+
-> not very hot because MV3
the cadavers run at 21 P with 2LP, but: pistol, A18, RC7...
the last rites man are funny with all they kill turning..
-> 1 W, so so CC, A 17 at 21 P relativates it..
the blight commandos at 32 P with 2 WD + CR 9 + MV 4 !
-> not bad but a minimum 4+1+1 squad runs at 209 P.. and thats just (good AR and a 1/1 FT)
-> best so far but not too hot, also
the cairath with MV 2.. hmm?
OK 4*eruption
then again A18 (3W) and PC46
-> he can give it, but with A18 he will go down fast
-> on a dense board where he can linger behind a corner and placing 2-3 templates, he should be awsome.
(then again, an AM RL costs 50 P..., or 1 attila 43 P)
-> pritty sweet, but somewhat limitating at MV2*4 and not too good price-value rate..
with support, the ill colossus seems very sweet with ATS attack.
but with CC8 (vs.12 from regular) imho, i also does not cut it..
=> i donīt see such a strong demnogonis army.. !?
ok, they are tough, but their AV is low and PC is high. RC is very weak and CC not better than any other DL army..
the Chars 1/1 FL only raises 1-5, the ritesman need be in CC and are only medium there..
==> i would love to try your army!