Warhammer 40K Tabletop XIV: "Pray for 6's!"

[Cheesegear]

Blast: lemanrusses, biovores, hammerheads, mortar units.

People use Biovores?
Even 'average' Imperial Guard players don't use Mortars. Mortar-spam is a highly specialised variant of Infantry Spam that no longer works in the meta-game (people also may have noticed that I dropped my Scout Army a while ago). These days it's all Heavy Bolters, Autocannons and Lascannons.

...Lots of Heavy Bolters/Autocannons, filtered into Infantry Squads like they should be, along with FRF!SRF! will work.

tyrannofex wit fleshborer hive? lemanruss punisher

Nobody uses either of those things. And Tyrannofecies, if kitted without a Rupture Cannon, is doing it wrong.

20 guards with grenade launchers and ''first rank fire, second rank fire''

Try at least 30. With Heavy Bolters and Grenade Launchers. Most IG players are only fielding one blob of these though.

Some tacticals with heavy bolters

I've not seen anybody with Heavy Bolters on a Tactical Squad in a long, long, long time. Heavy Bolters on Devastators, on the hand, is very nasty (esp. with Lysander). But, only because there are two units of Missile Launchers already.

Baal predetor.

All by itself? Probably not.

equal amaunt of hormagaunts, hormagaunts with FnP,

Fighting hordes with another horde is a bad idea. And Hormagaunts don't have FNP without outside help. Personally, I'd go either lots of Termagants (which you did suggest, credit where it's due), or Warriors with Deathspitters.

Canis wolfborn

On his own, no. He may have 11 or so attacks, but after that he's going to get hit by about 20 attacks. How long he lasts depends on who charged.