If you would like something more pretty, I would recommend assigning the return value into a hashref then looping over that:

my $loopHashRef = $mod->acls;
foreach (keys %$loopHashRef) {
    print $loopHashRef->{$_};
}
[download]

If you like, you could also assign the return value directly into a hash and loop over that:

my %loopHash = %{$mod->acls};
foreach (keys %loopHash) {
    print $loopHash{$_};
}
[download]

Update: Fixed a sigil - *grumble* copy+paste mistakes... *grumble*