Quick 500 point Guard list

Primaris Psyker

Veteran Squad: 3x Meltaguns, Shotguns
-- Sergeant: Shotgun + Pfist

Platoon:
-- PCS: 3 Grenade Launchers
-- Infantry: Autocannon
-- Infantry: Autocannon

Armored Sentinel w/Plasma Cannon

Armored Sentinel w/Plasma Cannon

I like this list, but I wanna say dropping one sentinel for a chimera for the vets might be worth while.

I think I wouldn't really gain much from the Chimera in a 500 point match, compared to what I'd gain from a plasma cannon on an AV12 walker which doesn't suffer Gets Hot.

yeah, probably the case. ;)

Two Plasma Cannons= awesomeness