That's quite a lot of content for 48h !
I tend to stay away from TD games for short jams as you need a lot of variety both in term of towers and ennemies for it to be interesting... And honestly you hit the sweet spot with this one !
My only little problem is I didn't get to try the last 2 towers. At some point my setup was efficient enough that it could sustain any enemy wave (I managed to go up to wave 25+) without dying so I couldn't go back and unlock the last towers.
Apart from that it's kinda flawless ! the art is lovely, the sound effects are on point and the game is pretty fun.
Great job :)