Exoinfo's Advent Calendar Puzzle

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EREMROFTALPQU XNURDEEPSBFHR ODRAOBREDAELN RDLKENKIVIIQA AGNIWSSOAEGBM CRCMECSHATNMW EFONOTWINNNTO RCHRISTMASNAN AGDVEKALFWONS LLSTNEVDAFONS GIFTYALPEMAGM ONCICUSTOMWME COMPETITIONDG
1.
exoracer
2.
christmas
3.
snowflake
4.
snowman
5.
advent
6.
gameplay
7.
santa
8.
alfie
9.
swing
10.
custom
11.
competition
12.
gems
13.
gift
14.
platformer
15.
speedrun
16.
leaderboard
17.
discord
18.
event