"Glue" is always suspect; "epoxy" can do a good job, if you can get enough surface area. Soldering is usually the permanent fix. These were delicate locos (I have one - now displayed), but not hopeless, and nice-looking for the times.
Parts for these locos and pieces of these locos (the early Wms Dreyfuss and plain Hudson models were the same mechanically) show up regularly on eBay. Often - usually? - the price is reasonable. If you have to buy more than you need as in a "parts lot" sale, so what? If the price is right, it'll give you some more spare parts to boot.
Or, get a better scale Hudson (they're all over), put this one back together cosmetically and display it on a shelf or on a "repair track" on your layout.