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Endgame

After solving all of the metapuzzles, a team would receive the endgame puzzle:
In the following code, each letter stands for a digit, and each three
digit number represents a letter from one of the puzzle solutions from
earlier in the hunt. For example, 352 would be the 2nd letter of
Puzzle 3.5. Good luck... your goal may be just around the corner...

  ARA ULT TAR ETA RLS AMU TUR ESS
  UEA RMT UAU ALA
  TSA UUU ELM UMU
  RRR TTT AAA EEE
  TEA UTE ERT TRR ABM AER RSR
  ASU REE TBM USR EAB TMA RTU EUT
Endgame Solution