to uninstall the mod you just need to delete its files. how will you know which files? just open the rar archive and look which files it contains. basicaly you can delete whole override, quests, utc, uti folder and few files from scripts folder. there are also 2 backup files just in case.which signs? you mean in character development?like always i completely avoid axii. quen is very, very helpful but doesn't need more then level 2 + few bonuses to work as it should. yrden is extremely helpful because it can seriously cripple, weaken and hurt enemy but only if you invest in it. igni is always good and depending on your playstyle you can consider maxing it. aard, like igni was extremely overpowered in vanilla witcher. now enemies are more resistant to it and stronger monsters are immune to aard effects. still its a guaranteed stun-1hit-kill on humans/dwarves/elves. level 3 aard is good, if you can spare more talents it's good skill to invest leftovers.most important skill in the game is dexterity + dodge and parry bonuses, then accuracy bonus, strength + damage reduction bonuses and sword styles to increase damage. endurance and inteligence like always is necessary if you focus on signs. resistance talents are very helpful but if you know potions well you can use them instead (i.e. use willow potion to make yourself immunte to stun and knockdown).its very important to be mobile in battles. you must move around and avoid being hit by multiple opponents. there's always a place where only 1-2 enemy can hit you at a time. being crowded means death.you might find my youtube movies useful. these are showing some of toughest fights in the game with highest difficulty version of the mod.if you have further questions i'll gladly answer themhave fun