'backward liar' (still don't get why loud)
The verb "to rail", i.e. complain loudly. At least that's my guess. "Weak" I think is supposed to make you think of "frail".
'avenger is moved' (wtf puzzle)
It's a simple anagram. It's not the thing itself but the letters that move. "Carve two points where the dead lie" means you need to add two letters to the word for "where the dead lie", i.e. "grave", so it's essentially two clues rolled up into one to make things more confusing.
'give up a short recess' [to get a word in]
This one I had forgotten, and had to think about for a bit just now.
First, "a short recess", which is simply the word recess shortened by one word: "reces". Then there's the "to get a word in" bit, which implies that you have to put a word into the other (bit of a stretch, but this trick is pulled in crosswords sometimes). "a word" is "noun", which is a class of word, thought I'll agree that this one is borderline unsolveable unless you have filled in a few of the letters already from solving some of the other riddles.
There's no "covered with rain" but rather "covered with cold wet spikes", which IMO is a fairly straightforward description of icicles. Then the way the riddle is formulated makes it clear that the answer is supposed to be an adjective, so what I did was just adjectvify the word (and now I just verbified the word adjective
). I wasn't aware either at the time that "icicled" is a word, but "cold wet spikes" was just too strong a hint to ignore, so I did what I thought was violate grammar rather than give up on it.
But as I said, they're tricky as shit, and I don't mean to flaunt my leet crossword skillz. It's just that I happen to enjoy this stuff, and I thought this puzzle was extremely well done. Absolutely loved it.