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The main goal in Totally Accurate Battle Simulator is to complete the entire campaign without getting defeated. If we lose a single battle we have to start the entire chapter from anew. In the first step of this guide we can grab up to 10 trophies in the Introduction campaign.
The Adventure campaign is a good one to work on Reaper Creeper without getting defeated. If you haven't eneabled "Unlock all units in campaign levels" yet, do it now.
This step can be done at any time. We must collect and unlock all hidden units and maps. With them we have all ingredients to unlock several trophys in Sandbox mode.
After the little detour to collect all units we can either go for the Sandbox trophies or continue on with the campaign where we still need to stay undefeated. Restarting a battle by pressing the touchpad also counts as a loss. With all the trophies of the previous steps unlocked we can solely focus on winning all fights.
You can do these trophies at any point. I personally like to take care of them before finishing the three secret campaigns. Even more so if you haven't unlocked these campaigns yet.
This step is basically the same as Step 4, we must clear all three remaining campaigns without getting defeated. The difficulty is similar to the standard campaigns, so we don't have to change our strategy.