Interesting idea! just like everyone mentioned. I have never made this kind of game, but I have some suggestions as a player.
time is crucial, so bullet instantly hit will be great. rather than aim from one spot, shoot straight, and let the player move between vertical tiles seems more convenient. It's a hectic game so consider auto-reloading the gun.
the money feels not really needed and the difficulty needs some rebalancing, but that is common in Game Jam.
Overall it's a nice work. you have a really good idea.
Good art. The movement suits the character's art. The background art seems to be drawn in a different style. Both are good. but somehow the difference feels like it stands out more than the charm. The game is hard from the start :D. But of course, all of that is just my opinion. Good work nonetheless.
Nice game! Besides the lack of visual feedback, the enemy difficulty spikes too high i think. one enemy single handedly wiped out my party. Still, Nice Work!
Interesting mechanic! However, it's quite overwhelming currently. or maybe I just don't get it fully. How about just click the ability directly and the skill points relocate automatically? i mean no need to click reset every time. Overall, Good work!.
Good art and audio! A fun tower defense. The "base" switching place is quite an interesting element, though it jumps too far sometimes. The mechanic is quite unclear at first, however. Overall, it's a fun game. Good work!
That tutorial idea sounds great! I will try to implement it. Yes, the movement is too slow, it seems i get used to it and then forget it after doing a lot of playtest.