Other than level-grinding until you can get the necessary upgrades to survive higher level survival maps, and avoid drops until tier 2 or 3, that really is the easiest way to farm Gigas. At least that we know of.

I'm with you dude. Not sure there is a discord for this game. I've been playing on and off myself since 2008, back when the game was still owned by Acclaim. Had to start over many times since. Last restarted in 2020 and unfortunately forgot my previous account. If you ever want to hop on and grind levels, let me know.