The .enc files contain additional .ctx files, you can use this QuickBMS script to extract them:
(I tested this with the files you uploaded but I'm not sure if all files work like this. If this script throws any errors or messages with a file please upload it so that I can take a look at it.)
No idea how to open .ctx though. They have a 0x40 byte header followed by what I assume is graphics data but not in a format I recognise. Alternatively they could be models (I don't know which game this is from) which I don't work with so in that case I can't help any further.
Code:
# 3DS .enc format
#
# Written by puggsoy
# script for QuickBMS http://quickbms.aluigi.org
idstring "\x0B"
goto 0x10
for i = 0
get SIZE long
get SIZE2 long
if SIZE != SIZE2
print "different adjacent sizes"
exit
endif
get OFFSET long
get FILESIZE asize
if SIZE == 0 && OFFSET == FILESIZE
break
endif
get NAME filename
string NAME -= 4
string NAME += _
string NAME += i
string NAME += .ctx
log NAME OFFSET SIZE
next i
(I tested this with the files you uploaded but I'm not sure if all files work like this. If this script throws any errors or messages with a file please upload it so that I can take a look at it.)
No idea how to open .ctx though. They have a 0x40 byte header followed by what I assume is graphics data but not in a format I recognise. Alternatively they could be models (I don't know which game this is from) which I don't work with so in that case I can't help any further.