One Command GH&PB

/summon MinecartCommandBlock ~ ~2 ~ {Command:/setblock ~ ~ ~-1 barrier,Riding:{id:MinecartCommandBlock,Command:/setblock ~ ~ ~1 barrier,Riding:{id:MinecartCommandBlock,Command:/kill @e[score_DS_min=1],Riding:{id:MinecartCommandBlock,Command:/execute @e[score_DS_min=1] ~ ~ ~ /fill ~ ~-2 ~1 ~ ~ ~ air,Riding:{id:MinecartCommandBlock,Command:/,Riding:{id:MinecartCommandBlock,Command:/scoreboard objectives add DS dummy,Riding:{id:MinecartCommandBlock,Command:/kill @e[score_TGH_min=2],Riding:{id:MinecartCommandBlock,Command:/tp @p @e[score_TGH_min=1],Riding:{id:MinecartCommandBlock,Command:/scoreboard players add @e[name=unknown] TGH 1 {inGround:1b},Riding:{id:MinecartCommandBlock,Command:/scoreboard objectives add TGH dummy,Riding:{id:MinecartCommandBlock,Command:/fill ~ ~-3 ~ ~ ~-3 ~ air 0 replace command_block,Riding:{id:MinecartCommandBlock,Command:/,Riding:{id:MinecartCommandBlock,Command:/gamerule commandBlockOutput false,Riding:{id:MinecartCommandBlock,Command:   ,Riding:{id:MinecartCommandBlock,Command:/scoreboard objectives add InGround dummy,Riding:{id:MinecartCommandBlock,Command:/scoreboard players set @e[type=Arrow] InGround 1  {inGround:1b},Riding:{id:MinecartCommandBlock,Command:/tp @p @e[score_InGround_min=1],Riding:{id:MinecartCommandBlock,Command:/ ,Riding:{id:FallingSand,Time:1,Block:activator_rail,Riding:{id:FallingSand,Time:1,Block:redstone_block,Riding:{id:FallingSand,Time:1,Block:command_block,TileEntityData:{Command:/tellraw @a {text:"TEST ONE COMMAND SUCSESSFULLY INSTALLED!!!",color:gold,bold:true}}}}}}}}}}}}}}}}}}}}}}}