I play on firefox, but all glitches I encountered so far seemed like it were just usual missteps, like collision on door being turned on while it open and enemies being too rough at the start. Enemy being so tough is basically solid block for progression at the moment... judging by screenshots - it should not be as bad and maybe some kind of bug with enemy power just creeped in at the late stages of the development.
In general for jams its always better to undertune than overtune encounters. You always can crank the numbers up later on, but it will help people to understand other mechanics better... especially when game is all about other mechanics, like yours seem to be!