Here you are (including source context, 11MB):
https://masswerk.at/spacewar/sources/LINC-Spacewar.zip
I see, I actually wrote an assembler for verification (see the listing.txt for list output and octal object code at the very bottom of this) – I hope this does work correctly, never tested.
PS: I also found this list of “instructions used” (I guess, this is an extensive list?):
ADA 1100 CLR 0011 ROL 0240 STA 1040
ADD 2000 COM 0017 SAM 0100 STC 4000
ADM 1140 DIS 0140 SCR 0340 XSK 0200
APO 0451 JMP 6000 SET 0040
AZE 0450 LDA 1000 SNS 0440
BCL 1540 NOP 0016 SRO 1500