I enjoyed it for a while, but I couldn't figure out the purpose of the different colour cartridges. On one playthrough I ended up in a room with 2 enemies and I was unable to do either ranged or melee attacks, so they killed me. I'm not sure if I needed to pick up more cartridges to replenish my attacking ability? I could not attack the furniture to get the cartridges, so I was stuck in a situation that I couldn't survive. I did enjoy it, but the cartridges aspect was unclear to me.