ia32-libs-multiarch being broken (caused by a couple 32-bit packages) is a
known problem, and there's a way to fix it on an individual system. See:
https://trisquel.info/en/issues/8155
It sounds like you panicked and removed basic system packages. Bad idea in
general; better to deal with problems cautiously and be sure you understand
what you're doing at each step. It's not going to get any more broken if you
do nothing, but it might if you do the wrong thing.
Probably you should make sure the trisquel and trisquel-recommended packages
are installed.
By the way, for future reference, what you should have done if it weren't
possible to solve the broken packages is remove all the packages apt was
complaining about, all at once. So, you should have done "sudo apt-get remove
libsdl-image1.2debian:i386", then added the 32-bit package apt said was
causing a problem with that command, and keep doing it until it works. You
instead used a force option, which is pretty much asking to destroy your
system if you don't know exactly what you're doing.
