Thinkng, no game that I've ever played gets [player's weapon stripped for no apparent reason (e.x. Game over).
Haven't you played the God of War series? Half the games do it after the first area.
Also, consider
balancing.Alucard has his own shit and there wouldn't be any sensible reason for him to wage war on the Castle without some kind of gear of his own. He left home centuries prior with his mother's heirlooms and went to sleep, so there's no reason why he wouldn't or shouldn't begin his journey with some of his own gear.
What would the devs have done if Death didn't steal it? Think about the point in the game you get it all back--very lategame, with every item obtainable at the same time(s) being lategame and strong gear also. If Death doesn't steal it at the start, then Alucard
begins the game with lategame gear, and thus there's no difficulty curve. Every item leading up to the Inverted Castle would have to be on-par with the items within it, and therefore the Inverted's items would have to be
even stronger than they already are.
And we already know how easily one can break the difficulty of the game in half after a certain point/getting certain items. If Alucard doesn't lose his gear, the difficulty curve doesn't exist, and as a direct result the game's balancing would be breakable
even sooner. We all know the Crissaegrim breaks the difficulty like a twig, now imagine getting it in the Alchemy Lab or Marble Gallery. Game loses all semblance of pacing and structure (or at least, what little it has up until the "become OP" segments are accessible).
And we can't just run with the idea of "well rebalance the difficulty curve to accomodate Alucard starting with and keeping his gear," since that would require all the lategame enemies being around from the start (which, regardless of
equipment, isn't a fair notion since you still start the game at a low
level regardless of your gear), and throwing even harder ones in at the end. It isn't as though Alucard
begins the game so OP the thing's barely a challenge--he can still die in a few hits in the hands of a careless or reckless player. So it isn't as if he himself was always super powerful when the game started, he just had really good gear. Meaning, of course, that his start-game skill is less to do with his stats or level and almost exclusively to do with the quality of his gear. And since his start-game skill is determined almost solely by a series of
items, those items become a very viable threat to the intended pacing of the game if allowed to be retained. Just look at how differently the game plays when one uses the Warg knockback trick to keep all the Alucard gear.