yep, no doubt about it now. got (most likely) all the upgrades and am fighting the final boss.
and by no attacks DO use energy again, most likely cause after the "no energy attack cost" sword, I picked up another sword.
so yeah, upgrades dont stack and kick each other out which sucks.
especially since you only keep the one you happened to collect last -.-
seriously though, the difference with and without upgrades is HUGE!
initially when I only played it with 1 single upgrades (the "dash through walls" one) it took me like 10 tries and many minutes to beat the boss.and now?
4 hits to spawn pawns, 4 more hits to kill him. boss time 16 seconds! :O
12:41 time with all upgrades. if I had known about cycling, some tedious pathways might have been avoidable.
You should prbably put some hin there that cycling is a thing.
since I assumed, like in every game ever, that upgrades stack and your one single sword just gets more abilities over time :-)