Downloaded the Squad Command Demo for the PSP, comes with one mission.

From their site:
# Compelling single player game consisting of 13 unique missions
# 9 unique multiplayer maps for Local or Global games, with small, medium and large map variants to cater for games from 2 to 8 players
# Fully destructible, real time 3D battlefields mean that no two games will be the same
# Pick from two Space Marine chapters or two Chaos Space Marine Legions to play as in Multiplayer games, in battles between Imperium vs. Imperium, Forces of Chaos vs. Forces of Chaos, or Imperium vs. Forces of Chaos
# Over 20 ranged and close combat weapons taken directly from the Warhammer 40,000 universe, including the Bolter, Plasma Gun, Chainsword and Power Fist

Read more for my opinions of the demo.