Came back and was popping off (survived 2 winters in one game) and second day after this error popped up ;[
Error
slug.lua:164: attempt to perform arithmetic on local 'previousForwardsShift' (a nil value)
Traceback
slug.lua:164: in function 'draw'
grid.lua:665: in function 'drawEnemies'
main.lua:790: in function 'drawGameplay'
main.lua:1785: in function 'draw'
[C]: in function 'xpcall'