New level and game balancing

[mthian]

Took me about 8.5 min to finish entire game. I was playing without the level prompts and ending story slides so that adds more time. Also a new player would go as slower than a dev. To game balance, I had to increase enemy damage so in the tutorial I increased the player's health b/c no one likes to fail in the tutorial

[gellneko]

the game crashes after beating level 4; also, maybe it's better to merge the main branch into this branch cuz there are some tiny bugs fixed in the main branch but still exist here and it's a bit hard to tell if there are new bugs

[laukaren]

i think the game is crashing after beating level 4 because of

this->levels_completed[curr_level] = true;

and levels_completed doesn't have an index 4 (my bad). i think we can change it to a regular vector instead of vec4

[mthian]

Alls good, i just added a if check. Also rebased this so now its branched from the latest main