(I think I just happened to be online at the time, I try to check my messages once per day but I'm not really a "consistent schedule" kinda person)
Yeah, good point... having a backtracking teleporter means I only need to change ONE instead of having to untangle the spaghetti that's the actual level. I'll make sure there's a penguin cop there TELLING you it leads back so it doesn't unintentionally screw with curious people because the level is already painful enough as-is.
When replaying I noticed Snow Queen might have the fewest number of attack patterns out of any boss (warp damage, icicle stomp, bullets), which feels weird. I'll probably have to do something about that and then having a better weapon will even it out.
The idea with Reinforcements is that you'd only get them once per day so they're essentially a finite/limited resource compared to buying stuff in the shop, but I didn't figure out a good way to do that so they reset every time you quit to the title screen. The other limiting factor is that you gotta REACH them for the powerups, so you'll only have a limited selection until you've unlocked every world while Jason just sells everything from the get-go in the museum. For a sequel I'd figure out some better way to handle both that and the shop (like having you gradually unlock new powerups as you progress - you have everything from the get-go here because I figured I wanted the game to be speedrun-friendly and let you route with as few limitations as possible)